I ride a 99 CR 500, that is set up for off road. I ride good old fashioned difficult Montana singletrack and race(Vet A) as much as possible in GP's, very occasional mx and enduro. I love the bike, but it is a beast and the power is just too much for serious racing. I rode a friends 04WR450F, that is only slightly modified (mainly just the pipe insert changed I think) I really enjoyed riding it! However, it did cough and stall on me on a mountain trail, and it was underpowered, but everything is compared to my CR. I am seriously considering a 05 but: 1. It doesnt seem to have the chug power of my CR...is this just a matter of getting used to the fact that it doesnt respond off of dead idle? Funny final gearing? 2. What silencer setups for quiet riding? Those four stroke exhaust systems sure are cool, but holy crap are they expensive! 3. How are the WR's holding up to serious racing? I ride hard but am able to conserve the bike, and the CR is one tank of a bike. No matter how tough I am on it, it craves more...and holds up! 4. Is it just me or is the yamaha tranny far inferior to the Honda's? Thanks for any info!