In general, we really like our Sprinter. It is a 277rls. Haven't had any major problems - no leaks, no failures, just a couple of annoying little things (the drawer under the stove always pops open while on the road). It has held up well considering we used it for a season and have been living in it full time for over four months. It has over 20K miles on it, from highways at 75MPH to washboarded back roads. We wished the insulation (for both hot and cold days) was better but we managed to stay warm and keep cool.