As far as a provider, personally I use Vonage and am happy with them. AT&T and Verizon also seem to offer an attractively priced voip package now.
Personally, i'd stay away from these ultra low priced providers. They might very well be just another SR waiting to happen.
Did hell just freeze over? Rick just mentioned AT&T without bashing them!
I've mentioned them numerous times in a positive light in this regard. I'm surprised that someone who stalks my posts and comments as much as you do didn't know that.
Anyways...... -- The Coyote captured the RR! Roadrunner Rick is now Comcastic!