I'm considering moving from a 250f to a 450. i ride a lot of trails, like to do freestyle jumps, and just like to goon ride. i would like a little more power than what my 03 yz250f has but i'm not sure i want all the power and weight of a 450. has anyone moved from a 250f to a 450 and then went back? are 450's really heavy in the air? i've only rode a 2010 yz450 for about 5 minutes and i loved it when i was on it. i'm just afraid it will be a lot to throw around in the air and that a 450 is more than i need because i don't race.