Here's a site that allows some comparison of different plans and provides
some brief reviews of same.

I had SunRocket, which went under. My neighbor transferred to VOIP.com and
is very happy with it. I can't tell he is using VOIP when he calls.

FWIW http://www.comparevoipservice.org/

I'm happy with Cox digital, at about half the cost of Verizon, but may go
back to VOIP in a couple months. Will wait to see what my neighbor thinks
in a month or two.
--
John H