With today's racquet market the only real reason for a switch is money, and no ones going to give him a better deal than Wilson. If he tried a pure drive and it was heaven on earth, Wilson would paint one like a pro open. Prestige-voila, here's your new blade, etc. All manufacturers make some version of everyone else's racquets now.
Wannabe 4.0; Always looking for Athens, GA area hitting partners!