Can't speak for Forax, but I just don't talk on the phone much. Everyone texts, even family. At $0.10/minute after the first 100 minutes, I'd have to talk for 10 more hours before my old plan would be the same cost.
I have the same setup. I do all my long phone calls at my computer anyway --- with GVoice + GMail, you can intercept your phone calls from your computer. And my family prefer skype as they can see me. I only use actual talktime when traveling, which is rare. Almost all coordination is now over text.