well, first of it is CNET, which are a bunch of wannabe techies, which complain unless something has 1 billion features, and performs uber well.
Anyways, Vonage is going down the tubes, but only because Verizon is trying to build a phone monopoly by suing Vonage out of existence. Vonage is still the cheapest by far, and if you have a decent high-speed connection works perfectly well. I've had vonage for ~2 years, without any problems at all. I'd switch to Verizon for VOIP (only cause I have their FIOS), but it costs $5 more per month, so why switch.
In all reality, Vonage provides some of the best service, for the cheapest price. Their customer service might suck, but I've never called them. The only real drawback, is that the lazy consumer has to plug everything in themselves, and that it doesn't come on one easy convenient expensive bill.
EDIT: also, skype sucks because you have to be connected to a PC to use it. If they offered a VIOP router that you could plug any phone into, i'd would consider switching if it was cheaper than Vonage.








