To me the slide operation was different. As the slide motors have to stay in sinc with each other. Learning the proper way to use them, ie you cannot stop the operation at anytime while either bring them in or out. You also have to keep the switch on a few seconds after movement so the motors can stay in sinc. Same hold true with over head bunk in you have one.
Most everything else operates the same unit to unit. As for mileage, I guess somewhere around 8. I do not really check because it makes no difference. I am going to go no matter what.
Retired and never looked back