Hi Dave (and Peg),
Main question gas or diesel?
Boy this topic has seen many miles on many forums, this because it is a very good question. I can only offer a personal opinion.
When it comes to economics, I feel chassis selection depends on how many miles a motor home gets driven annually. We own a 2007 PC-2350, built on a 2007 E350-V10. With 17,000 miles today, we average 3500 miles per year. Doing the math, we spend roughly $400 more on fuel per year than if we owned a Sprinter. Considering elevated annual maintenance costs of a Sprinter, the extra expense of $400 is reduced to at least $300, likely more. So people like us don’t drive enough to justify the added cost to purchase and own a Sprinter.
Regarding trade-in and resale, it seems linear. You spent $12,000 more and get back that difference when reselling the rig. Nothing gained, nothing lost. There is the “love & comfort” factor with the Mercedes motor home, of which some people simply feel better about. But that does not sell a used Phoenix Cruiser 2350 on a Sprinter any easier given the higher price tag to go with it.
Dave, you already know much of this. I am simply confirming your thoughts. The only thing I question is your fuel economy figures. My E350 (not towing) averages just over 10 mpg, and just over 9 mpg when towing our 4300 pound Jeep Liberty. This with top speeds near 70 mph. We don’t travel 55 mph given our limited vacation time. People who track their Sprinter-V6 diesel 2350s have noted averaging around 14 mpg when not towing. That is a 40% improvement. I think people who say they get 18 mpg are taking snap shots of a day’s journey across the Great Plains. Not trip averaging. If I am incorrect, then I appologize, someone please correct me. My E350 not towing will get 13 mpg doing 55 mph on the flats with no head wind, but that does not represent reality.
There are many debates on which chassis (E350 or Sprinter) is better suited for the task of motor-homing, and I won’t go there in this post. I will say that it’s all about trade-offs. Each has pros & cons.
We tow the Jeep Liberty on all our vacations, usually 3 weeks at a time. This is another reason why the motor home has fewer driven miles. The places we go, mainly to national parks & monuments, the motor home would be difficult or impossible to park at some scenic pull-offs and trail heads. Also, the 4x4 of the Liberty is used on day trips where a motor could never go. It’s really nice to leave home at the campsite, all setup waiting for our return. We just keep a cooler in the Jeep and enjoy our extreme mobility. If we find a day excursion better to have the RV with us, then we leave the Jeep at the campsite. Places like Disney World is real nice to have the motor home waiting in the lot, a place to rest mid-day.
As far as PC quality is concerned, you won't find anyone here with a bad thing to say about that. With that said there is no such thing as a "perfect" motor home made by anyone, and I think anyone who has owned any type of RV would agree. PCs are designed & engineered quite well to take the punishment of the road, and workmanship is ranked high. There is also something to say about general size. The smaller, the stronger. A small cardboard box is stronger than a big cardboard box made of the same cardboard. It's the law of nature. PC's are made lower and narrower than most other brands which helps in it's strength and integrity.