The Porsche Cayenne is the sportiest, best-performing SUV, ahigh-performance machine that will fit a family of five, haul a small washing machine, tow a large boat and get you through the woods when there's no road. It's a 5000-pound speed-sled that can handle rugged trails. Significant revisions make the 2008 Porsche Cayenne models more desirable than last year's models. Of the three versions, the Cayenne S is our favorite. Cayenne S delivers Porsche performance yet while dodging the higher price of the Turbo.

NewCarTestDrive.com editor Mitch McCullough test drove the 2008 Cayenne, Cayenne S, and Cayenne Turbo in Texas. With J.P. Vettraino reporting from Detroit and Greg Brown reporting from Dubai.