Vonage VDV21-VD Router

Pros: Adapter and service work fine together, the LCD screen and controls are a great idea
Cons: Adapter is proprietary to Vonage, can't help end-to-end lag on calls

I did my own trial of several VoIP services recently, including Vonage. I know a few friends and family members who use Vonage (+ cable internet) as their primary phone service. They seem satisfied, and I haven't noticed any problems calling them, so ...

Pros: Sound quality is fair
Cons: No money back if you ever cancel

I used Vonage for 3yrs and pre-paid a year in advance. When I tried to cancel my service after 5 months and get a refund for the remaining months, here is what Vonage told me:
From: Gail Ransom-Brown <Gail.Ransom-Brown@vonage.com>
Date: Mon, 5 Oct 2009 09:35:34 -0400
To: XXXX
Subject: Response to Your Recent Communication - Account #1002593

Dear XXX,

This email is in response to your request for refund of the Annual Residential Premium Unlimited Plan.

Your Annual Residential Premium Unlimited Plan renewed on April 3, 2009 and you cancelled your account September 10th due to changing to a bundled package with another carrier. Customers have 45 days from the renewal date to request refund of the renewal charges, therefore I cannot justify honoring your request.

Thank you & Have a Good Day!

Gail Brown, Customer Care
Billing Dispute Department