Hi Pastor Dave! I don't think you could go wrong with any of the units you've mentioned, but since we'd like to have you stick around here on MOC, we hope you pick a Mountaineer or a Montana.
Montana is the number one selling fiver in the nation. There's a reason for that. We have many members full-timing it in theirs.
Just choose the unit that seems to fit what you feel your needs will be. Hard to go wrong with a Keystone product, especially one made by the Montana Division.
Patty & Dick