hi i have ridden both a 250f and a 125 and dont know which to get or what brand for that matter. like the 2007 yz250fs and also love 2 strokes to death!!!! wanted to start racing and im 15 at 5'8 and 165 ish and dont know whats best. i want a two stroke cause there amazing and i also want a 250f but those are big bucks in the motor so i dont know whats best. what do you guys think?