I am slowly migratin to Google+ from facebook and in my opinion Google+ is much better than facebook. Basicly it is much cleaner, faster with no aditional balast(games) and it is in testing stage. It is all facebook was years ago.
I myself am still a member of Facebook, but only until Diaspora opens for beta.
For those who don't know, Diaspora is an upcoming social network, which is open source and where you will maintain total ownership of anything and everything you upload. Unlike Facebook or Google+ where every bit of information they can squeeze out of you instantly becomes something they can sell forward.