Welcome to the forum, John. I don't have a diesel but I did investigate them back when I was trying to decide what to buy. Two years later I can say I'm really happy with my 2351 on the Ford E350. By not spending so much money on the diesel initially, I could afford to get other options that I would not have been able to afford otherwise (solar, full body paint, etc.). Also, being not at all mechanically inclined, I felt a Ford would be easier to find servicing for when needed. I know the diesels can last a lot longer, but I figure that the $15,000 or so I saved at the beginning can go into a rebuilt gas engine someday if me and my PC ever make it that far!
Good luck with your search.