The track I race at is definitely HUGE. Its the largest on road track in california, according to others. Sun Valley has a long straightaway, and the turns are more of sweepers in my opinion...its setup for 1/8th scale racers, more than 1/10th scale. Very fun track to race at.
I'll most likely get the RB V12 5 port. Only thing I hate about having a turbo engine, is the damn plugs...so expensive!