We picked up our 2021 Stratus SR261VRL a few days ago and so far we are really pleased with it. They are forecasting record low temps during the next seven days so we'll get to see how well insulated it is. It has an electric fireplace heater that seems to do a great job in keeping the main living area warm but it's only 32° out - the real test will be when it drops down into the single-digits and teens this weekend.