Watched your 2010 450F in action yesterday at the "world wide launch". Yamaha rented an entire east coast track for a few days and brought in all the major magazine guys. They had about a dozen of the bikes in action (white and blue). They let me hang out and watch for about 5 hours. Got to see all the bikes up close, watch all the guys ride, etc. I think you'll be pleased with the machine. Highlight for me was watching Dubach hold off Lutes and Trickle for about 6 laps. They make it look so easy. Also noted that Ron Lawson (Dirt Bike) can ride really well and does a super nice whip. It was funny to hear the major mag guys talk about the bikes and discuss whom back at the "office" would "get to keep it". Thanks to the track owner (super nice guy) and Yamaha for letting me watch.