Im not ruling the Talon or T43 out, but I have noticed that most of the fast guys heavier guys have switched to carbon this year.
I do like Tectonic fins, and have a set of Nomads and a Hornet for speed boards, I also had every size Falcon F1 from 22cm to 34cm, so Im no stranger to how good Tectonics are
I always used carbon fins on my slalom kit as I'm approx 100kg and thought best to stick with what I know. I once got a set of Vector G10 Cranefires and sold em all a couple of weeks later cause I way prefered the carbon feel.
That's not to say the Talons or T43 would feel bad as Iv'e never tried them. If I were to go with two fins per board (iS107/iS137) what size Talon are best, and same for T43?
I normally take one fin size that works most of the time, and one fin size for light winds. Currently use Select S10 39/41/45cm on iS107, 39cm & 45cm dont get used much at all, the 41cm seems to cover 90%. The iS137 I use S10 47cm and 51cm, the 47cm is good 80% of the time.