Ultra Lite vs Normal Weight

Our first 5th wheel was an ultra light. Besides what others have pointed out, the walls were 1.5" thick, barely any insulation. My wife could be outside and talk to me while I was inside like we had nothing between us. Ours only had one AC unit to keep the weight down so spending the winter in Florida wasn't ideal with that RV. It didn't save us much of anything in fuel costs being lighter either. We traded it in when we returned home and bought a 5th wheel with thicker walls, two AC units and better insulation. Our new 5th wheel is so much better built with much better fit and finish. It's not top of the line by any means but fits our wants and needs now. You get what you pay for.