I have the protaper bars on my 250. When I bought the setup, I got the complete new clamps (not the top clamp, but the bar clamps). I also ordered the 1 piece Accutrax ProTaper top clamp and aluminum cones.
The setup works really well. Much more solid feel to the bike. There is no more vibration than with the rubber mounts, could be the bars there. You can still tweak the setup like stock on a harder hit, but grabbing the front wheel and twisting fixes that. I guess it is better than bending bars.
The protapers are some tuff bars. I have not bent them yet in a years riding with plent of contact!