Every thing is a trade off based on how you camp and how much stuff you want to add to your TT. I only dry camp usually in the forest away from sun. My Norcold 682 is 25 years old and still works fine with a new burner tube. Two 6v GC batteries last me 7 days without generator use before they reach 50% SOC, so by then I am out of water and my wife wants to do laundry. Water has always been my limiting factor while dry camping not battery power so no need for solar. I know many people full time or have greater electrical requirements but for the average partimer who likes to dry camp in a NF,NP, or SP CG I would stay with a propane refer. If you always use FHU CG's a cheap residential will work fine.