Just go download it. Both the Android 4.1 and 4.2 keyboards have been pulled out and put on the Play Store.
I'm using 4.2 on the Galaxy Nexus and the keyboard is fine. Exact same as 4.1 but it has the gesture typing option if you're into that. You can turn it off if you want to though.
Its just a stock keyboard though, nothing fancy, it just works. Everyone likes different things... there are dozens of great keyboards out there for people to try. No one can tell you what keyboard you'll like.