Should I, Shouldn't I, Should I, Shouldn't I, etc etc

From what you've described, there is no reason to change campers. Your current one sounds like it's still in good shape, dependable, and has lots of life left in it. Unless you have specific reasons why you are dissatisfied with the current one, then keep it. But if the itch to get something "shiny and new" becomes to intense ... well ... I certainly give you my blessing to get it!