I got a 5er because the C was getting tired (over 140k on it) and got tired of paying insurance on 2 motor vechicles. I like the extra space of the trailer but it was sure easier to park the C. My milage went from 8 mpg to around 12.5 mpg (diesel). As things are I think I want a B as we do not go as often anymore but still want to enjoy the outdoors. I think I can live in a smaller unit and when the time comes again when we can get back to AZ I think we can rent a double wide for a heck of a lot less than owning a RV.