Ok ill step into the ring. I run on a small tight track and have raced against all the motors you have been talking about except the WASP. I dont have the STI but i do have 2 EVO 3's and they are more than capable of coping with a tight infield, and then have the ability to make a OS look like its standing still on the straight. After trouncing the field last year with my EVO 3 everybody else was sick of getting slughtered down the straight and through the infield so all bar 1 guy now have EVO 3's.

So i am sure that the STI will be even more capable of what you want.

Cheers Daniel