The QX56 comes with one of the most powerful V8s in the class. It's an excellent choice among full-size SUVs for towing a heavy trailer while hauling seven passengers in luxurious comfort. And it offers serious off-road capability, an area where Nissan has a lot of experience. The QX56 is based on the full-size Nissan Titan pickup and Armada SUV.

The Infiniti QX56 offers seating for seven or eight and is rated to tow 8,900-9,000 pounds. Nissan's 5.6-liter 32-valve engine generates more torque than the V8s in the 2006 Cadillac Escalade and Lincoln Navigator. The Lexus LX470 and Toyota Sequoia can't compete with the Infiniti's towing capability.

Out on the highway, the QX56 is smooth and quiet, benefiting from a four-wheel independent suspension and a smooth five-speed automatic. It feels responsive and sure-footed on winding roads. Yet it's capable off road; its four-wheel drive-system features a low range, and skid plates are available. It comes standard with latest in electronic stability control, traction control and ABS technology, all of which can help you maintain control in emergency handling situations, and the available all-wheel-drive system further improves handling stability in slippery conditions.

The QX56 is as luxurious as the best of them. Its opulent cabin is lathered in leather and stuffed with technology. It comes standard with a navigation system, an optional feature on many vehicles.

The QX56 gets more standard equipment for 2006, including power folding outside mirrors, a 60/40 split third row seat, a sound system with MP3 capability, and a Bluetooth hands-free phone system.