I have an 04 250f and I love it, but I race in open class and I"m lined up at the gate with 250 two strokes, KX500s, 450 this and that bikes, and its tuff to get the hole shot when your simply out powered in the long straights. Instead of soaking a bunch of money in my current bike to extract more out of it, I"m thinking of stepping up to the 05 450f, since they made it a little tamer to handle. I"m 200 lbs and I went up two teeth in the rear on my 250f and it made a big difference, but I"m still out gunned by the bigger bikes. Am I making the right decision here or what? And whats it like to go from a 5 speed to a 4 speed with that much power? I can only imagine alot of you guys on small tracks only using 1st and 2nd on your 450s? I leave the gate in 2nd gear on my 250f, what gear do you 450ers leave the gate in? Just looking for some imput from some of you that made the switch. Are you happy with the jump to a bigger bike? Any imput would be appreciated!