I'll be interested in the responses. We have gone from a Montana to a Montana Big Sky and now we're contemplating going shorter. We have looked at Montana, High Country and Mountaineer. We really like the Montana 3610, but it is actually inches longer than our current Big Sky. I would add, though, that if I were fulltiming, I believe I would be looking at the Montana line, just because of some of the features such as temperature rating and the six point hydraulic level up system vs. electric. Good luck, and you've found a great source of information.
Ron and Terrie Ames with Sirius - MOC #1920
2015 Montana 3160 Legacy Package
2019 Ram 3500 Laramie Longhorn
4x4, SRW, SB, Mega Cab, Pullrite 2600 Hitch