We upgraded from our Jayco Eagle RLTS365 to the Columbus 365RL. The only issue we've had so far is our hot water to the kitchen sink is freezing up. Not the cold line, not any of the bathroom supply lines, just the kitchen sink hot water line. We will start with additional insulation under the floor, and I've begun researching skirting options, as here in Kansas, we can easily have extended periods of single digit temperatures..
Many propane will rent the 100# cyclinder to you if you buy their propane and you don't have to carry one around. Some will deliver a 250 tank and come and fill it on site if staying there for a long time.