I've been well less than impressed with Verizon VoiceWing service so far.
VoiceWing's voice quality sucks compared to Vonage. There's an echo on the line, and static as well, that isn't there on Vonage (the Voice over IP (VOIP) provider that I formerly used).
I left Verizon's traditional phone service (Plain Old Telephone Service or POTS) a long time ago because the old copper lines in my neighborhood were so old and deteroirated that my phone service with those lines was completely pathetic. Once I moved to Vonage, and left behind the older, higher prices of Verizon and gained a full sweet of calling plan options (3 way calling, call waiting, call forwarding, etc.) I was incredibly happy. Vonage's service was inexpensive and outside of a few small hiccups was rock solid.
Unfortunately Vonage was sued by Verizon, Sprint, and later AT&T over various patent infringements. Because of what has looked like the imminent death of Vonage (as they pay out large settlements over these cases), I left Vonage behind and switched to Verizon's VoiceWing service. Since making that change though, as noted, I've been far less than impressed.
VoiceWing apparently doesn't work at all for my DirecTV TiVo based receivers. They try repeatedly to phone home and never connect. So far I've been left to connect my Vonage TA (Telephone Adapter box) back up and connect the phones in the house to it so that the boxes can complete the calls that they are 'required' to make once every so many days (not really required to make, but they'll nag the heck out of you and keep trying to make the calls unless you get the connected up about once every 30 days).
Finally, most irritatingly, Verizon's use of the Message Waiting flag on the line seems incredibly spotty with the lights on my phone always blinking for voicemail that isn't there or never blinking at all when there is a message. Not backwards enough to count on with no rhyme or reason to that at all.
I'd move back to Vonage in a second if I thought that they would be around in the long term, but I'd rather wait through the first quarter or two of next year to see how they are doing business wise. If they hang on, they might yet get me back with me raising a big middle finger to Verizon for their crappy VoiceWing service on the way out.