Hi GroundHawk,
On a whole, I love the Sprinter. It is comfortable,roomy,handles great(does get pushed around a bit in heavy winds), good built quality. I couldn't go back to a GMC or a Ford.
On the negative side is that part supply is limited to the dealers,most mechanics aren't yet aquainted with it,but things are getting better all the time.
I have had one problem in 39,000 miles and that is poor mpg in comparison to other units. I'm getting 19 mpg when everyone else is getting a minimum of 23 mpg. Freightliner hasn't found the problem yet. Hopefully they will soon. I have talked to dozens of owners either in person or on the net and I am the only one with this problem.