I’ve used Vonage for years. Every once and a while I’d have a connection related issue, until about 2 years ago. I can say for sure I’ve had flawless service for at least one year, and probably more like two.

If you are interested in trying vonage you can sign up through this link and get up to two months free (and I get two months free as well) http://www.vonage.com/friend/ Just put in my vonage phone number of 503-914-5990.