One is $54,470 and the other $121,120. One goes 0-60 mph in 5.1 seconds, the other in 4.6 seconds. Lastly, one has a naturally aspirated 6.4-liter V8 making 470 hp and the other a twin-turbocharged V8 making 500 hp. These are the numbers for the 2012 Jeep Grand Cherokee SRT8 and the 2011 Porsche Cayenne Turbo, and to say these figures are impressive would be an understatement. You see what these big four wheel drive behemoths are capable of is something that is quite astonishing, for on any given day they have the ability to put the hurt on 98% of the road going sports cars out there. These are giggle machines. They’re linebackers with the ability to also run the hurdles and or sprint the 100 meters with ease. Sure one is American and the other German, but quite honestly, who cares as either one of these pack mules will have you smiling from the moment you get in them, to the moment you get out. Click through for the full review.