They all make valid points about the 6.0 but its not as scary as a lot of people think.
I do however think you can find one for a better price. I got my X 6.0 4x4 with 140k on the clock for 9600 out the door. At that price I could justify if i needed to put 2k into the engine (which I did). But it has been great.
2004 Mustang "Gt-R" - 5.4L SOHC 70mm Turbo
2004 Excursion 4x4 6.0 Bulletproof
2014 Explorer Sport
2002 F-350 7.3 4x4 Long Bed Dually
1987 F-250 460 2wd