Yah I thought real hard about the 450F, but I dont need that much bike or power really...
I only weigh 140lbs, so a 250F is more then enough. I can easily wheely in 4th, its crazy...Those 450's are insane though!! They'll easily go 90-100mph (stock), my 250F only goes probly 80 or so (stock)...
Those little 85's are a kick in the pants to ride, ha ha, my cousin has a yz85 and I swear I feel more unsafe riding that little thing, then my bigger bike!! Its just got to much power, for those little wheels and with my weight on the a$$ end, the front end is always coming up off the ground...
I use to be a 2 stroke guy, but ever since I rode my friends Honda 450 quad, I thought I had to have the new 4 stroke technology, but in a dirt bike. I dont like quads, I feel so unsafe on those things going any faster then about 50mph, ha ha ha. I just dont like having to wory about 4 wheels either. Also there heavier, not as fast, and when you wreck you better hope it dont land on you...But I do like the Polaris 500 HO sportsmans, they make GREAT hunting 4 wheelers, especially with some Mud-Lites!!