Well i was a customer of sun rocket, canceled mine last year, and thank god i switch back to normal land linehttp://www.slashgear.com/sunrocket-voip-was-in-fact-too-good-to-be-tru e-176270.php
That is terrible...I'm still on a home telephone line. haha Never used VoIP myself.
I also have a normal line
I have a vonage line, and it works just fine & dandy. I would never get rid of it!!
I've got Insight cable and I use their VoIP service. It's been fine except when faxing, for some reason it never seems to work right.