Wow you'll have to stop me from talking because I've been researching your question since 1977! I just landed in Bozeman Montana, and am very excited for the possibilities here, much of which is the quality of life! I believe I've finally landed in the best spot for me in the country...
I lived and sold Real Estate in the mountains outside of Denver for 10 years... stunning country, but getting into that market at the moment would be daunting. plus, to be honest, it's become VERY crowed in the backcountry. I loved it there, but have been angling to get back to Montana since I left Missoula in 1989, where I had also lived for 10 years. Missoula is one of the best towns on earth, and there seems to be a ton of affordable real estate there now, and a great, growing university which provides lots of renters. Hunting and fishing anywhere in Montana is as good as it gets. Boise seems to be really hot now for investing; it was one of the hardest hit bubbles in the recession but i hear it's coming back very nicely and affordably... Incredible back country just outside Boise, and lots of snow up high, but pretty warm and Dry in town itself, I hear.
Bend, Oregon has Sisters 20 minutes away, which means skiing almost all year round, Deschutes river and beautiful backcountry, and the ocean is not far at all. Really vibrant real estate market, which also crashed hard in the recession but seems to be coming back strong. Sorry, Brandon, Washington is too rainy for me, too
Bozeman is a little pricey, but with some diligence and good hard work I feel confident that investing here is a great proposition.
If you get to Bozeman, or if you have other questions about some of these areas that i might be able to help you with, look me up!