Closer shave, less irritation (vs Sensor disposable). Better even on the 10th shave (Overall preference vs. Sensor 2 Disposable). DuraComfort blades for Mach3's best first shave (Lower cutting force than Mach3). Extra-lubricating gel strip (vs Mach3) glides to help fight irritation. 2x more skin guard fins (vs Mach3) for a smoother shave. All Mach3 cartridges can be used on all Mach3 razors. www.pg.com. Comments? 1-800-Gillette. www.Gillette.com. The best a man can get.