Wild was a solid B-. I didn't read the book, but I imagine they tried to jam a lot of book into a little movie so important things seem hinted at but never fully fleshed out. The scenery alone makes it worth viewing.
I really liked Boyhood, but I don't know how much of that was just because the production format was so unique and how much was because of the story. Either way, definitely worth seeing if you have not already.