This thread is right what I was looking for. Going yz250fx or yz450. Being 230lb A enduro guy, I know the 450 would be fun, but not Ideal. I feel like the 250 would leave me flat. Although the 6 speed would help in the open stuff. Any suggestions? Since you are in Michigan what is the terrain like that you ride most? Flat and tight trees? If there is much elevation change or climbs I would say you should probably go 450 for a guy of your size. Flat ground, tight trees no big open straights? A 250FX might be a good idea. Do you ride wrapped out or lug it around? A 250 you are going to want to keep it higher in the RPM's 450 you can lug it around and still be going fast.