OK, I'll throw my nickel's worth. Everyone talks about getting up and moving around in the MH, did you ever stop to think how dangerous that could be?? If you had to do a panic stop (and traveling on our roads it happens alot) while the DW was headed to the potty, where would she end up. Next is the easier to setup deal, with many of the newer 5ers with auto-leveling. We traveled all summer with friends having a 40'DP and Toad to our 40' 5er and Dually TV. We were just about equal in setup and tear down time. They needed oil changes in both the MH and Toad, us only in the TV.
Like mentioned only you can make the final decision, for us a 5er hands down.