I bought a 2015 Dynamax DX3-37RB in May 2014. The base is a Freightliner M-2 HDT truck. It's built like a tank! Mine is one of the earlier units. Apparently, it was built by Moe, Larry, and Curly (who I've been told are no longer in the employ of Dynamax). I've had most of the issues dealt with over the last two FROG Rallies. The floorplan is the best I've seen (and I searched for three years to find it). My coach is 98% usable with the two slides IN. With the slide out, I have an incredible amount of space. NOTHING important slides. ALL the water, propane and major appliances stay put (I believe that has changed in the later models). Many "regular" Class-C coaches are near their GVWR before you put anything into them. Super-C Class motorhomes have huge safety factors and, with the engine up front, vehicle service is a snap. Super-C tires are also standard truck tires. As such I'm told they run about $100 PER TIRE less than RV tires. My unit runs great and, with the cruise control set at 62~63 MPH, I see 10.7 MPG in fuel economy.