I'm finding voip.ms to be pretty good, no major issues in over a year of using them. It's a power user tool, so it's not quite as slick as Voice was.
I ported my old Voice number to voip.ms too.
I ported my old Voice number to voip.ms too.
I also have a Google Voice account, but the service is less reliable than Voip.ms, and I only use it to call a couple of family members who use Google Voice as their primary phone service.