I agree with Girlrider. I've spent considerable time on a 200 Pro and can do anything on it that I can on my 280Pro...sometimes better, and I'm a good 200lbs. I know one expert rider up here that rides and loves a 200Pro, and he's at least 180lbs. Lack of power never seems to be an issue for him, except on real extreme climbs.
The 200 revs pretty quick, but is more forgiving than the 280 or even 250. That said, you may want to look at the 300. It apparently revs slower and makes gobs of torque and power, although I have yet to actually ride one myself yet. I really liked the 250 myself. Quick reving, but slightly more forgiving than the 280.