I think both of these trailers will come with a 50 amp service but you can use an adapter for a 30 amp supply. If you have two A/C units (which I would recommend) you can run one at a time with the 30 amp supply. Our Open Range is a TT instead of a 5er but we love it. We have the 8 cu. ft. frig and it suits us fine. We take longer trips of a month or more at times and it seems fine. I don't think we would need a larger frig if we were full timers. I have seen the new trailers with the 3 inch walls but have no experience with them but strictly my opinion, if you have a tow vehicle that can handle the weight, 3 inch walls would be nice but not really needed. We have used our trailer in cold and hot locations and have no problem keeping it comfortable with the heater or air conditioners (we have two A/C's). Since we don't have a built in generator, we use two Honda 2000's in parallel to run an A/C when we boondock. We have always been able to cool the trailer with one A/C but it does take longer than running both of them. I don't think you can go wrong with an Open Range so you are well on your way to a nice unit. Happy camping.
