In short: Don't think twice. I have never tried another extension to Joomla such as JoomSocial, I'm sure it's fine. I can only tell you that you will be in heaven using this one.
1. It's user friendly
2. It's powerful beyond your wildest dreams
3. Everything you will think "Ah.. I wish it had this or that", it's probably there or they created an extension for.
4. They keep developing extensions for it and they are pretty cheap.
5. Using their support is just ridiculously enjoyable. YOU WILL GET ANSWERED and by very capable programmers. Indeed, not everything they can fix or change just because you want it to do something specific, but they listen and they really DO something trying to help you.
If you're thinking of extending the capabilities of your site and community builder. I got the Advanced package and it's great! Clean, to the point, friendly, you get an answer within a DAY! Now, show me another place you will have that!
My questions were answered and keep getting answered quickly on the forums.
Documentation is not great, but if you have some knowledge and common sense, you'll get it running in no time.
It's the only plugin which exists for this purpose, so it's not like you have much of a choice.
Super flexible! Good work.