Don, I'm not on a tight budget.. My goal is to be able to maintain my life style no matter where I'm setting. I don't see me ever getting rid of our generator. I have and use a toaster oven daily. When needed, we run the AC. I make coffee with an electric maker. We use the microwave as needed. I have no intention of changing any of that. We like dry camping much more then full hookups. Mainly because of less people and more open country. We talked a couple years ago when I put two additional batteries on the back of our Fifth wheel and ran 4 Ga. cable along the frame to the them into the main batteries. I have 2 batteries in the battery box and two batteries on the rear carrier. All US deep cycle batteries. Because the main battery box is a compartment in the side of the trailer that gives no addition room for anything including taller batteries ( thats why I have 12 volt instead of 6), I have to get creative when talking about controllers and battery shut offs. I have to try and figure where to put it. None of this can go in the battery compartment. All this leads to that controller size means something. I guess in truth, that was one reason that the suitcase appealed to me. I didn't have to deal with where to put additional equipment. The thought of putting 100 or 150 watt panel on the top in addition to the suitcase is certainly enticing tho.