I have a 2011 40 foot sportscoach cross country dp. Overall very reliable. I drove from Detroit to Alaska last year and just got back from Yellowstone last week. No major problems. Most important thing to do is make sure you have plenty of time to drive on highway, check for wind noise, and make sure everything works perfect before you sign the check. I also had to pay someone after an inspection to tie all of the loose cables up that were hanging down from the chassis.
Before going on major trip take on a weekend camping trip and plan on bringing it back to dealer for minor adjustments.
Just purchased a 2012 CC ds385 and love it. To me it's mid level and doesn't have all the extra bells and whistles that other DP have but I would never use for now. Spent 16 years with pop-ups, 11 with an early Bounder and most recently 8 with a Four Winds C, all basic units. We really were interested in tank capacities, some additional sleeping opportunities for our kids and grandkids and the open floor plan. No problems with any of the power train components. The only complaint so far is the king mattress which is pretty soft.
Getting ready put lots of miles on it as we are getting ready for trips to Florida, California, Wisconsin and one or two others this year. Stay tuned.
2012 Sportscoach Cross Country 385 DS
Freightliner XCR w/ Cummins ISB 6.7L 340 hp
2009 Saturn Vue, Blue Ox Alpha, RVi Brake 2