I purchased an Alpine 3600RS in February of this year and I have had very few shake down problems. It is much nicer than the Thor Colorado that I replaced. The Keystone customer service was very helpful and were the best that I have dealt with in the 10 years that we had been camping, and the 3 other campers that I bought new! The water controls for winterizing the camper were perfect with water heater bypass and tank bypass valves clearly marked. Keystone took great pains to put in enough lights, and the standard heat pump unit installed as the main AC unit keeps the coach comfortable down to about 30 degrees outside. The Automatic setting on the thermostat allows it to change over to the Gas Furnace when the Heat pump can no longer keep up. There are many features on the Alpine units like the Hydraulic lift legs and the Hydraulic slides that run off of the same pump. Look at the features and see the upgrades that they build in as standard on these unit. Feel free to pm me any questions.
2014 Ram 3500 CrewCab MAXTOW DRW, 2015 Forest River Dynamax Trilogy 38RL