Need help with finding first camper to purchase

We have the slightly larger AR-One 17RD and have had zero issues in 5 years. It's entry level, but has everything we need. However, it is NOT a 4 season camper. We have camped where it was in the lower 20s at night, but I'm sure we sucked down quite a bit of propane keeping it warm.
You may want to consider a used unit for what you want to spend. RVS lose valuh e rather quickly.