While I've never owned a Montana, I don't particularly want to own another blind magazine rifle.
I had a Rem 700 ADL that I converted to a BDL and after market stock many years ago.
The detachable magazine on the Hunter is really pretty good. It sure is handy for those situations where you need to have an unloaded rifle ( where not legal to be mag loaded in a car/quad or whatever ) and for range use and teaching newbies/kids..etc.
The Creedmoor (R) has plenty of room for reloaders to chase lands and not be confined - while my 7/08 (L) will have to be held to factory specs, for the most part.
Unless I'm totally missing something here, the Hunter stocks are plenty stiff and can be made even stiffer with a little epoxy in the honeycombed fore end.... if the stock just doesn't fit you or simply don't like it, well... that's an issue you'll need to solve for yourself.