im kinda sick at the way you guys turn on one of your own...if a man makes a decision encourage him don't degrade him,you guys remind me of a pack of wolfs as soon as one gets wounded you guys finish him off..
now for the comparison between the Fords 7.3L and the Duramax,we have 2 OBS PSD's one with 400,000+miles and the other with 150,000 miles and both ofem need plugged in if you ever want to start them under 30* and our Duramax's will fire up everytime and never been plugged in..now our Duramaxs(3 ofem)range from 112,000-140,000 miles and never had any problems with them except for stuff caused by a guy learning how to tune with EFILive(i had to learn somehow)but even then nuthin serious,water pump gasket and a tranny upgrade since the stock Allison hates 500RWHP.
the 7.3L will get you there everytime but like my bro says even if they wanted to quit they ain't got enough power to blow up.
when it comes down to it put the DIESEL in your driveway that you want there.
PS,if you want lots of HP with little work the Duramax will smoke the PSD everytime thanks to the CR Injection System,and if you get a Duramax join us over at the DuramaxForum.com we can help you with the modds.