Suitable kv's for a Vendetta on 2S ?

Lutach, you're correct in the modules and pitches thing. The Vendetta and Vendetta ST use Mod .5, which is "48 pitch metric" (that is what most people call it; it is in use on Tamiya vehicles such as the TT-01, but it is not the proper term).

I use Tamiya pinions on my Vendetta ST with a 430L 3550kv align outrunner motor. It's geared 19/45 on a 2s apogee 1500 magnum pack. With all the settings turned down on the quark 33, it still has tons of scoot. (<- that's my face every time I grab some throttle)