I purchased my 2006 SR5 (4dr) in December. It has more than enough power, better than average comfort for a truck, and I like the look. It would be easy to complain about the mileage, but I do not believe anyone ever purchased a full size truck because it got good gas mileage. Therefore, I only have two concerns. When idling down a hill, almost any hill, it often shifts into a lower gear and the RPMs jump up to 3000+! The local dealership admitted to receiving complaints about this, but claimed there is no fix. Also, as others have stated, the turning radius is poor. If you are attempting a u-turn, make sure you have MORE than 2 lanes to your left.
Good acceleration, automatic rear window, plenty of legroom and cup holders for ALL passengers.
Improve the transmission, tighten the turning radius, and add lumbar support to the front seats.