The Jeep Grand Cherokee SRT is the best SUV in the Jeep lineup. The one pictured is the second generation of this beast of a truck. The performance for the money is really good. The SRT has the same engine as the Challenger, and Charger Hell Cat. The main competitors to the SRT are the Porsche Cayenne Turbo, Mercedes GLE 63 AMG, and BMW X5M. It is cheaper than its rivals.
Jeep just reviled the Jeep Track Hawk which has the Hell Cat motor producing 707 horsepower. That is much more power in an SUV is pretty crazy. Jeep is pushing the bar really high. American muscle is take new forms. The only other SUV that comes close is the Tesla Model X.