i am 14, 210 pounds, 6 ft tall and i have been riding motocross for 8 years. i am getting a new dirtbike for 2009 i currently ride a 250cc dirtbike and i am wondering if i should get a 250f or 450 i know i could ride the both of them but i dont think the 250 has enough power for me but does the 450 have to much? i just want to know because i am deffinatly getting a 4 stroke and i know a 250f is slower then the 2 stroke 250 so i dont really want it, i am planning on racing again this year, anybody who can tell me about the 450 would be greatly appreciated because i just dont know if i should just get the 450 or another 250.