 Bought the truck used with 6k on it with the TRD Sport and tow packages.  The truck is great looking, and seems to have good build quality and reliability.  However, at only 15k it does have a couple rattles and my radio has already gone out once (replaced by dealer).  Fuel economy at first was not great, but I actually get better MPG at 75 mph than at 65, probably averaging 18 mpg total.  The back seat in the Double Cab is tight for adults as it is - forget about it in the Access Cab.  Four adults drove from KS to CO, and the people in the back were slightly cramped (both below 5'10").  The V6 is plenty powerful, and ride comfort is good for a truck (I drive 25k a year too).