I've recently (just this morning) been shown the formulas that regulate TP build
with delay so to try and help me out I've done a few calcs. Might have a few 
mistakes here and there but it all seems to be in order. This is to give you and 
idea of dmg per second and tp gain. Of course you need to factor in your acc and 
such but if only your weaps change, those factors should not modify the outcome 
of these stats. I havent done any calcs for WS dmg and such yet might check that 
up later.
 
Here goes:
 
This will examen the statistical performance of these 6 combos as they seem to be the 
most talked about.
 
Using the formulas from ffxiclopedia and is considered that once over the 100 tp bar, a 
WS will be used to maximize your dmg output.
 
I have willingly left out weapons such as X’s Knife and Mandau as they are so 
rare and so good that if you ever happen to fall upon one, they should 
immediately be considered as your best weapon.
 
Weap stats:
 
Harpe/P.Harpe:
Dmg: 35/37
Delay: 210
 
Blau Dolch:
Dmg: 33
Delay: 178
Att + 16, Acc + 5
 
NOTE: again, this is assuming that you’ll be using WS as soon as you hit 100% tp
 
Misericorde+1
Dmg:   28
Delay: 178
Dex,Vit and Mnd +3
 
Sirocco Kukri
Dmg:   26
Delay: 150
Additionnal Wind dmg that triggers 100% of the time
 
Heart Snatcher
Dmg:   30
Delay: 205
Critical Hit Rate+6%
 
Behemoth Knife+1
Dmg:   32
Delay: 201
Att+10
 
 
--------------------------------------------------
 
Harpe/Blau:
Total Delay:       (210 + 178) * 0.85 = 329.8
Delay/weap:       164.9
Tp/weap:       5 + (180 - 164.9) * 1.5 / 180 = 5 - 15.1 * 1.5 / 180 = 4.874
Rounded TP:      4.8
Time/weap/swing:    164.9 / 60 = 2.75
TP/weap/sec:       4.874 / 2.75 = 1.77tp/sec
RTP/weap/sec :           4.8 / 2.75 = 1.755tp/sec
Avg Dmg/sec:            (35 + 33) * 0.5 / 2.75 = 12.36
Avg Dmg/sec :           (37 + 33) * 0.5 / 2.75 = 12.73 (P.Harpe)
 
Blau/Misericorde+1:
Total Delay:       (178 + 178) * 0.85 = 302.6
Delay/weap:       151.3
Tp/weap:       5 + (180 – 151.3) * 1.5 / 180 = 5 – 28.7 * 1.5 / 180 = 4.761
Rounded TP:      4.7
Time/weap/swing:    151.3 / 60 = 2.52
TP/weap/sec:       4.761 / 2.52 = 1.89tp/sec
RTP/weap/sec:           4.7 / 2.52 = 1.865tp/sec
Avg Dmg/sec:            (33 + 28) * 0.5 / 2.52 = 12.10
 
Blau/Sirocco Kukri:
Total Delay:       (178 + 150) * 0.85 = 278.8
Delay/weap:       139.4
Tp/weap:       5 + (180 – 139.4) * 1.5 / 180 = 5 – 40.6 * 1.5 / 180 = 4.661
Rounded TP:      4.6
Time/weap/swing:    139.4 / 60 = 2.323
TP/weap/sec:       4.661 / 2.323 = 2.006tp/sec
RTP/weap/sec :           4.6/2.323 = 1.98tp/sec
Avg Dmg/sec:            (33 + 26) * 0.5 / 2.323 = 12.70
 
Blau/Heart Snatcher:
Total Delay:       (178 + 205) * 0.85 = 325.55
Delay/weap:       162.775
Tp/weap:       5 + (180 – 162.775) * 1.5 / 180 = 5 – 17.225 * 1.5 / 180 = 4.8565
Rounded TP:      4.8
Time/weap/swing:    162.775 / 60 = 2.71
TP/weap/sec:       4.8565 / 2.71 = 1.79tp/sec
RTP/weap/sec:      4.8 / 2.71 = 1.77tp/sec
Avg Dmg/sec:       (33 + 30) * 0.5 / 2.71 = 11.62
         
 
Harpe/Sirocco:
Total Delay:       (210 + 150) * 0.85 = 306
Delay/weap:       153
Tp/weap:       5 + (180 – 153) * 1.5 / 180 = 5 – 27 * 1.5 / 180 = 4.775
Rounded TP:      4.7
Time/weap/swing:    153 / 60 = 2.55
TP/weap/sec:       4.775 / 2.55 = 1.87tp/sec
RTP/weap/sec:           4.7 / 2.55 = 1.84tp/sec
Avg Dmg/sec:            (35 + 26) * 0.5 / 2.55 = 11.96
Avg Dmg/sec:      (37 + 26) * 0.5 / 2.55 = 12.35
 
Blau Dolch/Behemoth Knife +1
Total Delay:       (178 + 201) * 0.85 = 322.15
Delay/weap:       161.075
Tp/weap:       5 + (180 – 161.075) * 1.5 / 180 = 5 – 18.925* 1.5 / 180 = 4.84
Rounded TP:      4.8
Time/weap/swing:    161.075 / 60 = 2.685
TP/weap/sec:       4.84 / 2.685 = 1.80tp/sec
RTP/weap/sec:           4.8 / 2.685 = 1.79tp/sec
Avg Dmg/sec:            (33 + 32) * 0.5 / 2.685 = 12.1
 
 
--------------------------------------------------
 
Recap:
 
From a tp gain stand point, Blau/Sirocco is the winner
B/M:    -5.8%
H/S:   -6.8%
B/BK:   -10.2%
B/HS:    -10.8%
H/B:    -11.8%
 
If TP is truly rounded down to the nearest tenth then:
B/M:   -5.8%
H/S:   -7.1%
B/BK:   -9.6%
B/HS:   -10.6%
H/B:   -11.4%
 
Note: Without any Store TP items or other modifiers, B/HS and H/B will achieve 100TP 
in 21 hits where B/M and B/S take 22 bringing B/HS and H/B back to more or less 5-6% 
difference with B/S
 
For DPS, B/Sirocco also wins:
H/B:   -2.7%
B/M:   -4.7%
B/BK:   -4.7%
H/S:   -6.1%
B/HS:   -8.5%
 
So for normal TP gain and DPS, the Blau Dolch/Sirroco combo is the best but the 
following must also be considered:
1-   Sirroco and Heart Snatcher are drops
2-   Heart Snatcher has +6% crit
3-   Harpe has higher dmg then Blau and therefore would net you a stronger WS
4-   Sirocco has low dmg so has a better chance of hitting for 0 on mobs but 
        the enaero effect triggers at a rate of 100%
5-   Behemoth Knife+1 has attack +10 and blau dolch has att+16
 
Also there is one item that will greatly change these stats and that is the Suppanomimi as 
it brings the Dual Wield modifier to 80% delay compared to 85%
 
 
--------------------------------------------------
 
Harpe/Blau:
Total Delay:       (210 + 178) * 0.80 = 310.4
Delay/weap:       155.2
Tp/weap:       5 + (180 – 155.2) * 1.5 / 180 = 5 – 24.8 * 1.5 / 180 = 4.79
Rounded TP:      4.7
Time/weap/swing:    155.2 / 60 = 2.59
TP/weap/sec:       4.79 / 2.59 = 1.85tp/sec
RTP/weap/sec :           4.7 / 2.59 = 1.815tp/sec
Avg Dmg/sec:            (35 + 33) * 0.5 / 2.59 = 13.13
Avg Dmg/sec:      (37 + 33) * 0.5 / 2.59 = 13.51
 
Blau/Misericorde+1:
Total Delay:       (178 + 178) * 0.80 = 284.8
Delay/weap:       142.4
Tp/weap:       5 + (180 – 142.4) * 1.5 / 180 = 5 – 37.6 * 1.5 / 180 = 4.687
Rounded TP:      4.6
Time/weap/swing:    142.4 / 60 = 2.37
TP/weap/sec:       4.687 / 2.37 = 1.97tp/sec
RTP/weap/sec:           4.6 / 2.37 = 1.94tp/sec
Avg Dmg/sec:            (33 + 28) * 0.5 / 2.37 = 12.87
 
Blau/Sirocco Kukri:
Total Delay:       (178 + 150) * 0.80 = 262.4
Delay/weap:       131.2
Tp/weap:       5 + (180 – 131.2) * 1.5 / 180 = 5 – 48.8 * 1.5 / 180 = 4.59
Rounded TP:      4.5
Time/weap/swing:    131.2 / 60 = 2.187
TP/weap/sec:       4.59 / 2.187 = 2.1tp/sec
RTP/weap/sec :           4.5/2.187 = 2.06tp/sec
Avg Dmg/sec:            (33 + 26) * 0.5 / 2.187 = 13.49
 
Blau/Heart Snatcher:
Total Delay:       (178 + 205) * 0.80 = 306.4
Delay/weap:       153.2
Tp/weap:       5 + (180 – 153.2) * 1.5 / 180 = 5 – 26.8 * 1.5 / 180 = 4.78
Rounded TP:      4.7
Time/weap/swing:    153.2 / 60 = 2.55
TP/weap/sec:       4.78 / 2.55 = 1.875tp/sec
RTP/weap/sec:           4.7 / 2.55 = 1.84tp/sec
Avg Dmg/sec:            (33 + 30) * 0.5 / 2.55 = 12.35
 
Harpe/Sirocco:
Total Delay:       (210 + 150) * 0.80 = 288
Delay/weap:       144
Tp/weap:       5 + (180 – 144) * 1.5 / 180 = 5 – 36 * 1.5 / 180 = 4.7
Rounded TP:      4.7
Time/weap/swing:    144 / 60 = 2.4
TP/weap/sec:       4.7 / 2.4 = 1.95tp/sec
RTP/weap/sec:           4.7 / 2.4 = 1.95tp/sec
Avg Dmg/sec:            (35 + 26) * 0.5 / 2.4 = 12.71
Avg Dmg/sec:      (37 + 26) * 0.5 / 2.4 = 13.125
 
Blau Dolch/Behemoth Knife +1
Total Delay:       (178 + 201) * 0.80 = 303.2
Delay/weap:       151.6
Tp/weap:       5 + (180 – 151.6) * 1.5 / 180 = 5 – 28.4* 1.5 / 180 = 4.76
Rounded TP:      4.7
Time/weap/swing:    151.6 / 60 = 2.527
TP/weap/sec:       4.76 / 2.527 = 1.88tp/sec
RTP/weap/sec:           4.7 / 2.527 = 1.86tp/sec
Avg Dmg/sec:            (33 + 32) * 0.5 / 2.527 = 12.86
 
 
--------------------------------------------------
 
 
This does not change the fact that B/S is still best at both tp/sec and dmg/sec but lets 
check the stats again: 
 
Tp/sec:
B/S best
B/M:   -6.2%
H/S:   -7.1%
B/BK:   -10.4%
B/HS:   -10.7%
H/B:   -11.9%
 
With rounded tp values:
B/S best
H/S:   -5.3%
B/M:   -5.8%
B/BK:   -9.7%
B/HS:   -10.7%
H/B:   -11.9%
 
Dmg/sec:
B/S best
H/B:   -2.7%
B/M:   -4.7%
B/BK:   -4.7%
H/S:   -5.8%
B/HS:   -8.5%
 
As for the number of hits to get to 100tp:
B/S   23
Others 22
Which is a 4.3% increase in tp build up speed for the 5 other builds making B/M almost 
as fast as B/S.
 
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Lastly, Store Tp bonuses will affect tp building speed and it is possible to reduce the 
number of attacks required to get to 100tp by adding Store tp items to your tp build the 
most popular of these items are Rajas Ring, Chivalrous Chain and Brutal Earring 
although it is possible to get more. Using the 3 mentioned, a total of +7 Store Tp is 
gained.
 
This brings tp gain to:
(first without suppa then with)
B/S:   4.99      4.9            4.91      4.9
B/M:   5.09      5            5.02      5
B/HS:   5.196      5.1            5.11      5.1
H/B:   5.215      5.2            5.13      5.1
H/S:   5.06      5            4.98      4.9
B/BK:   5.13      5.1            5.05      5
 
Without suppa, B/S requires 21 hits and others 20 but only needs an additional store tp+1 
to knock off 1 hit. This can be attained with the bushido cape
 
With suppa, B/S will require 21 hits and others 20.
 
 
--------------------------------------------------
 
Conclusion:
 
For pure TP build, Blau Dolch/Sirocco is the clear winner but this build also offers the 
least dmg.
 
If you want to go for Tp build and you are unable to a Sirocco, the B/M is the way to go.
 
As for pure dmg I believe H/B is probably the best build since Harpe has 9 dmg more 
then sirocco which will help against high def mobs and will net you stronger WSs. But 
for VT and under in a Burn pt, I think B/S is still best for dmg output and the 
100% enaero on Sirocco also stacks up to good dmg. If it is possible for you to 
obtain these 2 daggers, I highly recommend it as statisticly they provide the 
all round best results.
 
As for B/HS since I have not played with it yet, I cannot testify to how much the crit rate 
bonus will help so I’ll leave that one to your judgement. 
 
 
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This table can help you check which is best for you it tells the ranking of each combo for each criteria.
 
        Dmg/sec          TP/sec      TPw/Suppa   MainHandDmg
H/B      2      6      6      1
H/S      5      3      2      1
B/S      1      1      1      3
B/M      3      2      3      3
B/HS      6      5      5      3
B/BK      3      4      4      3