When I sold my 01YZ250, I was unsure if I should buy a 426 or 450. I loved my YZ250 so I decided to stay with the Yamaha for 02 and bought a New YZ426. I LOVE the bike. Alot of people are buying Honda's just because of the Honda name. I got my Motocross Action in today, and they compare the two motorcycles, and to my liking they say there is no comparison between the two. The only thing they say that is better about the Honda is that, it starts eaisier and it is lighter, but other than that, the Yamaha spanks it in all other departments. There are people who have a 426 and are selling it to buy a 450 just because it is new. I guess what I am saying is that Honda makes a great motorcycle, but Yamaha has 3 years of development on them, and Yamaha owners should think twice before jumping ship.