I don't think that you can go wrong with this service.
I have had it for about 3 years now and during that time, the job relocated us to a new state.
It was really a nice touch to have the same phone number go with us.
I can't speak to this particular model, because I have the older one, but the service is outstanding. I have no complaints with it at all.
I do think that it will save you a great deal of money if you still have regular home phone service.