We have had:
1. 35' travel trailer bunkhouse.
2. 38' front bunkhouse fifth wheel
3. 42'11" Sandpiper 372LOK (midbunk fifth wheel with a loft)
We have 3 kids, a grown son and 2 daughters, aged 14 and 11. Son does his own thing, so he is no longer a consideration. We are both now retired and we camp host at least 2 months (May and August) and we travel at least 3-4 weeks during June and July.
The TT was great for weekend trips, but the bunk room was too small when we started camp hosting, so we traded up to the front bunkhouse so the kids would have some place to sit other than laying on their bed in their room.
We really missed being able to all 4 sit and watch a movie when it was raining or sit around and talk.
The mid-bunk allows the kids to have their own "room" and the older one sleeps there and the younger sleeps in the loft area. This accommodates differing sleep patterns (younger one is a morning person, teen is NOT)! We have had this RV for a year - purchased in June of last year and we wouldn't trade it for anything.
We have camped in several SC parks and always put in 40 feet, because most of them won't let you enter anything bigger. It has NEVER been a problem....YET!
Yes, it's big, but we both drive it - we both park it - we both back it up, etc.