We have been traveling out West in our new 17 B since January, dry camping in temps as low as -7 Here are some first impressions. We too had propane supply problems initially but once we refilled the tank and purged the system of water the propane is working fine now. The 11000 btu heater has been more than adequate. Mostly we are using a 1500w space heater that needs to work hard to raise the internal temp from our nighttime setting of 50 to 65f. The floor insulation and heated tanks have kept the gray and black tanks liquid. I haven't assessed the adequacy of depending solely on the floor insulation as one would in a boondocking situation. I am so glad I took Reace's advice not to bother attempting to tilt the solar panel to increase the efficiency in the low angle winter sun. We tried a couple days of simulated boondocking here in the campground by simply not plugging in. Using lights, exhaust fan and the propane heater, the dual 6v would discharge to 90 percent overnight and easily recharge the next day even in cloudy conditions. There has been condensation in the cabinets and where the cushions contact the outer wall, and especially on the window frames, even in the double pane windows. We have installed Reflectix insulation in the cabinets with good affect and along the space where the cushions touch the wall with fair affect. We just stack the cushions at night to allow air to circulate and the combination works ok. Always crack the overhead vent and a window for air circulation. Haven't towed in snow much, too warm most of the time. All in all we are happy with the experiment, now if it would only snow a little more.