Many comparisons have been done but all is hear say and no one has shared what they have experienced.
Well, from what I experienced, Facebook is clearly better because it has had more time to develop whereas Google+ is still in Beta mode..but I like Google+ because it has a better format, I like the fact that I can share things only with some people and not everyone instead of just inboxing a group of people.
as of now google+ has gained many customers but we have to wait and see for how long will it regain them as we know in this changing technology world people need something special everytime,yesterday facebook was popular,today google+,what might be tomorrow?who knows any thing can happen
Google+ is still in its infancy, which Facebook was like an innovation when it came out... Google has a lot of work to do to catch up with facebook. What I like abt G+ though is that you can choose who sees your updates before posting them. So you can send certain messages to certain groups of people such as friends and family.