FWIW...the eastern side of Idaho has some great places too. The cost of living will be a little lower than some of the areas around Boise. Idaho Falls has a great reputation as a medical hub for the region, and you're close to Salt Lake for great medical facilities if needed. Oh, and I know the area well. Grew up in Idaho Falls, and returned to southeast Idaho after awhile and plan to never leave again. My 2 cents!
I grew up in eastern Idaho, then spent several years in Utah and northern California. Idaho is still my favorite of all those places. If you can handle the cold, the Idaho Falls would be a great place to live. If not, then Boise would probably be better.
The recommendation about the Twin Falls area is a good one too. Not quite so cold in the winter, and close to a lot of great places, although it is rather dry/boring right around TF, but then there's that beautiful canyon right on the north edge of TF city limits. Also look up photos of Shoshone Falls which is at most 10 minutes from TF and rivals Niagra Falls in many opinions.
We bought property in New Plymouth (about 40 miles west of Boise) outside of town. Everyone was very helpful when we were shopping/buying and since when we have needed advice about weeds, irrigation, building and such. Beautiful country and affordable too.