Owned my 2006 Titan Crew cab LE 4x4 FFV since April 07 and am very satisfied. Love the smooth ride and power. Sometimes forget I'm in a full size truck. Only had a problem with the radio going out out on me but the dealer replaced it. Looked at the F150 but found the rear seating more comfortable in the Titan (Important on long trips). Looked at the Tundra but to have it equipped like the Titan would have run up in the 45k area.
Driver comfort, headroom, looks, rear liftgate damper, Rockford Fosgate system and the acceleration.