I’ve had the Ooma for a couple years now, with no problems. IIRC, there’s a one-year warranty.
We have the premium service, for an extra $100/year. That gives us unlimited long-distance (N.America), and more extra features than I know what to do with. One handy feature: you can check your voice mail from your e-mail. This allows you to sort through the messages and play them back (or not) in any order you chose.
Ooma uses some special software, which makes it superior to cheaper competitors. For instance, it prioritizes the phone data, so you get perfect call quality, even if you’re streaming a HD movie at the same time.
I paid over $200 for my Ooma, and figure it paid for itself in about 4 months. (Mainly because of the savings on long distance calls.)
Just a thought — GoogleVoice to ‘answer’ and forward the home phone to a cell (TMobile unlimited plan).
That way the phone number we have had since dinosaurs roamed the earth still ‘rings’ my wife and there is no geographical limitation (free to travel).