I owned a 2004 Tundra Limited until a young lady on her cell phone rearended me when I was stopped to turn left. It was totalled and I replaced it with a 2006 Tundra Limited. My wife drives a 2003 Toyota Sequoia, same 4.7L engine and drivetrain. Other than the balljoint recall on hers and routine maintainence it has been trouble-free for 95,000 miles. We get between 14-16 MPG in mixed country/city driving on both. Keep the RPM's around 2000 and I get 18+ on the highway. The Tundra has a nice sized backseat and the 6' bed works for me. I haul big loads with my trailer, but enjoy the convenience of hauling a sheet of plywood easily without digging out the trailer.
We have nothing but positive things to saw about our Tundra. The power down rear window is my favorite feature! I like the towing capacity of the new larger Tundra's, but mine is paid for and I hope to get 200K out of it.