Bought a 2006 Tundra 4x4 double cab TRD, and I love it! Truck is very comfortable on long trips, even with four people in. Truck gets decent fuel mileage ,I avg. 19-20 on long trips to the mtns. here in Colorado. Great sound system (JBL), one thing that helps alot with fuel I think is the camper shell I have. Back window makes for easier access to bed, the suspension is not too harsh, the TRD is a great package for going off road. All in all the best truck I ever bought.
Very comfortable even for backseat passengers, Love the TRD package and the Jbl Sound system.