I bought a Jay Feather RBM 23 new in Jan of 2016. It is 23 ft on the floor, plus about 3 ft of tongue length with GVWR of 5995 lbs. I tow with a Ram 1500 with the 5.6L gas V8.
I have pulled this trailer about 20,000 miles including a 6 month stint all over the western US (including lots of mountains and some rough roads) This is at the upper end of your size range, but I never had trouble fitting into the sometimes small CGs at state and national parks.
We LOVE the livability afforded by the Murphy bed. There is one fairly large slide out for a very comfortable dinette, and the sofa that is part of the appeal of the Murphy bed floorplan is a real plus, IMO. It only takes a minute to put it up or down, and it makes the trailer live like a 30-footer! BTW, I also chose this model for its large kitchen space. That may not matter if your use is more short trip oriented than ours.
Sounds like you are already a fan of the Murphy bed, but I've never understood why more people don't go for these. Seems like people either love or hate them. Main complaint seems to be reduced storage, but my unit has more storage than I need, even living aboard for six months. I do have a cap on my truck, though, which kind of solves any storage shortage.
My Jayco was made before the sale to Thor, but my few warranty items after two years were handled very well under Thor's ownership.
I've been very satisfied overall with the quality of the unit, and if you're thinking about buying used, finding one like mine would be a good choice, if you decide to go that big.
Feel free to PM me if you have any questions.
