I purchased the Power Pure to replace some Michelin Power tires. The first thing I did notice was an improvement in tracking through corners. The upgraded rubber in the Pure model seems to be smoother and provide better feedback than the older Power models. Michelin claims that the Pure is also lighter in weight, and it does seem so, though the difference is very slight (I run magnesium wheels). Wet weather performance is also superior to the old Powers, which is of vital importance here in the Pacific Northwest. They handle rain quite well by remaining stuck to the line you choose and stop quickly even on bad road surfaces (another PNW issue). The one issue with these tires is lifespan - it is short. After less than 2,000 miles of mostly commuting, the rear was already starting to 'peel' across the center area of the tread. It does not hamper performance, but it eventually will, so now it is time to try a new set!