Traxxas Slash motor choice question

Originally Posted by brushlessboy16

pick up a 1509 :D

This was my next question, which Neu motor to get, 1509 or 1512, so you reply before i post

I realy considere a Neu 1509 in the 2700 Kv.

But tell me please, which is better on 3s: a lower Kv motor with a bigger pinion or an higher Kv motor with a smaller pinion

Or both is as good?