I have owned the regular Ooma for 2 years. Unfortunately I signed up about 2 months after they grandfathered in the other users with absolutly no tax at all. I pay about 3 bucks a month and have had absolutely no problems at all. It has gone out briefly 1 or 2 times when my network was down, but my previous phone probably did that just as much. Probably one of the smartest things I ever did.
I had it up and running in not time - just connect it to your router and plug in your phone. Ooma support walked me through the setup. Their support is great - online chat answers my questions fast. This is a must for saving money. A great product.