And I've been with VOIPo since before the beginning...around 2008 and am quite familiar with VOIP. I haven't had a land line for about 8 years.
I tried a number of other VOIP providers and struck out with all of them.

For me, VOIPo has offered solid quality service. For the few times a glitch occurred, a simple email or phone call took care of it right away.
As a matter of fact, much quicker than when I had a land line with BellSouth/ATT....where it was not only impossible to connect to them, but where responses were almost non-existant..