Depends on how much you're willing to spend?
A Hummer H-1 brand new, you'll have to remortage your house. Not to
mention the absolutely horrible performance, driveability, and gas
mileage these get.

Another no holds barred 4x4 that's also gotta be up there in price,
would be the VW Touareg V-10 Turbo Diesel. 360HP, and 535 ft lbs of
torque. All it is, is a re-badged Porcshe Cayenne. These do come with
either a V-8, or V-6 Gas engine. My 73 year old father just bought
himself a 2005 Touareg with V-6, and says it's an awesome vehicle. Mark