Also posted the same in the 2-stroke area but wanted to get some thoughts from you guys in the four stroke area.... OK, so first off, let me say that I really love my YZ250 ('05). I have never even considered another bike since I first kicked it over back in June 05. Then today, I go riding with my buddy, who just picked up a nearly-new 06 YZ450F. Holy cr*p, that bike felt awesome. The suspension felt buttery smooth, the bike turned better than mine, I was able to carve lines on the track that I cannot do on my YZ 250, I felt more comfortable doing high-speed corners on that bike than I do on mine. I've got nearly 100 hours on my YZ and I only spent 15 mins on my friend's 450. What the heck, this left me feeling kind of bummed. I hate the thought of dropping my 2-stroke (the fun-factor is out of sight), but I sure felt smoother on the four-stroke. If I'm going to ride a red-sticker bike, I might as well be riding the bike that feels the best to me. I say that because I have considered moving to a WR450 for the green sticker. I don't know...any thoughts? I know where I can pick up a new 06-450F for a good price. BTW - I know this subject has been beat to death, so I don't want this to turn into the typical, "2-strokes suck, 4-strokes rule" B.S. thread.