I really want a MagicJack type device to work. Until I met the owner... sheesh. I thought all those types drank the koolaid in Guyana!
Nevertheless, his ability to find massive banks of telecom servers and weasel his way into time-sharing on them - it IS an interesting concept. Like you, we had bad then good tests with the original few devices, but the "unlimited" issues were too bothersome, and their suggestion "Get a second device and continue your call on THAT one" was too irksome to consider.
"Do I hear 3? 3! How 'bout 4? 4?"
We are much bigger fans of the Oomas. All of them.