Not yet. Why don't we give it a try? Skype works really well, I think. The limitation seems to be with bandwidth more than software. Then again, the more efficient the software at preparing the signal, the less bandwidth is needed.
Anyway, free is my favorite price. We rarely have more than nine on. I think we went with Skype initially because we anticipated more people at once.
I recently had to reactivate my Google+ account, so I'm willing to give it a go. Russell and I tried to use it once, but that was pretty funny having us two trying to figure out how to do a conference call on Google while pinging one another on Facebook "No, no, try this..." "OK, I've got that now what?" "How am I supposed to know? Oh, hang on. There's a button." And so on for most of a Saturday afternoon and we never did make it work.