I have 2 lines, one is vonage and the other is packet 8, I've had both for 5+ years. Packet 8 has never given me issues, vonage has replaced their router several times over the years, otherwise no complaints. I would do either again in a heartbeat over the local carrier. I have several friends that use magicjack and have nothing to say but great things about it. My only complaint about magicjack is that when someone answers another line or puts you on hold, it plays loud annoying music, however I'm assuming this is configurable.

cheers,
Tim