Vonage is awesome! We've been using it for about 2 years, and I have zero complaints. My wife makes a lot of long distance calls to her relatives, so it really saves us a lot of money. I only pay 25 bucks a month, and it works like a champ. No one even knows you're calling them "over the internet" unless you tell them. I have run it on two seperate broadband connections, and can say that it works best with a lot of upstream bandwidth, so in my case, it worked best with my cable connection. I had it on a DSL line before, and it worked great too, but there was less upstream (only 128kbps), so if I was logged in to work and sending a big email message, it would cause my phone conversation to occasionally cut in and out for a few seconds. My cable connection has 384kbps upstream, and I've never had any such issues. Voice quality is top notch as well! As long as you've got a decent connection, you can't really go wrong with Vonage.