I recently traded off my last .40 (a Glock 27) for a S&W 637. I think its one of the best decisions I've ever made. I tend to carry my XD-45C most of the time and if I'm going somewhere where I don't want to bother with my XD. I'd much rather pocket carry the 637. The .40 round is great for some people, but I just can't get over the snappy recoil of the round. I far prefer the recoil of .38 +P to the .40 recoil. Call me crazy, but the .40 was becoming a safe queen.