When I was truck shopping last year, I was dead set on buying a diesel...eventually I was convinced to buy a gas. The best ford diesel was the 7.3. A guy near me is selling his 01 Ford 7.3 (loaded) with 299k on it for $11k. It seems like the older diesels really hold their value. Now as far as the new diesels go, my mechanics really don't want much to do with them if they can help it. With all the emissions systems on the trucks, they have become much more difficult to work on. From what I have heard and been told, Ford has been hit and miss with their diesels since they came out with the 6.0. Some guys love their Ford diesels and others have had nothing but problems. It seems to me right now that if you want a diesel, GM is probably the way to go...at least until Ford "nails" their diesels again.