Vonage user here for the past year, nothin but good to say about them. The abundance of features, unlimited long distance including canada and puerto rico, and amazing international rates for 24.95 a month will keep me a customer for life.
With Verizon I was payin like $2 a minute to call India. With Vonage, I pay just 12 cents. I also really like the fact I can take my small vonage box anywhere I go w/ a high speed internet connection and receive calls....especially if they are business calls.