I have owned both Ford and Chevys in the past and the '06 Tundra SR5 Double Cab is by far the best I have ever owned. Only two complaints, fuel mileage and turning radius. Both of these are minor complaints due to the fact that this is a big truck, and you cant expect to get mileage in the 20's with something this size or expect to turn it like a corolla. I sure when (if) I wear this one out, I will be purchasing another full size Toyota. It is extremely comfortable and fun to drive and has plenty of power to haul my needs.
Power roll down rear window, lots of storage, comfortable ride.
Fuel mileage and turning radius. Don't mess with anything else.