FunPro 
2006 Toyota Tundra Double Cab SR5 4dr Double Cab 4WD SB (4.7L 8cyl 5A)
So far, so good
 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.