I've been using Raspbmc and OSMC (which spawned from Raspbmc) on both RP1 and RP2 and they've both been great. While OSMC is only on RC2, it's fairly solid and RC3 should be coming any day. As well as standard addons for Kodi, it has an App Store that will ultimately let you install things like torrent clients and the like with ease. Their default skin needs a little work but it's nice and fast.

Great job Sam and the team.