Yeah, I think the whole reason I popped into this thread was to say that weight plays a big role in whether or not 300 W means much (in my case, it just means 3 W/kg). Momentum (and downhills) is really the only nice thing about being as big as I am. Gotta get my back and knee back into shape and then lose this weight to get back to race weight again (hopefully without losing too much power).