how have they been holding up for the guys that have them with the 6.4L powerstroke?? im in the $37-$38K range for an XLT X-cab short bed, upfitter switches, tow command, 3.73 gears, etc. i really wanted to get a used truck, but they want like $30K+ for an 06 with 50k miles. thats only 1 yr left on the bumper to bumper, and 3 yrs left on the engine. and its a 6.0 which is as good as a grenade with the pin pulled. the new 6.7L cummins in the dodge was nice, has a built in jake brake, sounded sweet, rode like crap. really nice interior. the 08 chevy rode good, very fast, very quite, drove very nice but blah for the interior/exterior in my eyes. the ford is the best looking of the ugly 3 and had a nice interior and handled great. thoughts from those that have any 08??