Yeah, my 2008s were by far the most reliable trucks I've owned. The biggest issue I had ever encountered was a rear differential lock motor, which was a "big" issue because it took 4 hours to replace. Air suspension is easy, engine was solid, neither of them even leaked any oil.
However much I love my 5 litre trucks, and especially my 494/405s, the 322s will always have my hear for being my most reliable daily drivers. Favourite still goes to my Ardennes Range Rover Classic.