I have been using Ooma now for about a year. Initially the free line was going to take over our land-line. I ended up keeping our land-line for emergency reasons. You know… in case our internet and all our cellphones go bad, lol. No matter how you look at it the Ooma beats having to pay $30+ monthly for unlimited nationwide calling, 3-way calling, caller ID, call waiting, and more.
Admittedly, it has its ups and down. To use the line as a fax number, I had to tweak the system a little. If you are using any Voice over IP type of system, you should really give Ooma a try… it’ll save you hundreds of dollar a year! Whatever you do though, don’t buy their Telo headset. It’s a piece of junk that has little features, low volume, and poor clarity. (Update: If you get the Telo headset, you get the instant second line… free.)
Ooma support seems to be outsourced and utterly useless. They’ll just repeat what is on the Ooma website. If you have any problems with an Ooma go to their forums, you find your answer there. Oh, BTW, I have had to RMA my first one already because I stopped work after two weeks.
Long story short, Ooma is great when it is works. There is a small learning curve and once you have it set up right, everything will be great.
One more thing, there are two versions of Ooma, the Hub and Telo. The Telo is the later version and looks slicker, but comes with an annual tax of approximately $11.