I just received my NetTalk Duo and I must say its working way better than my MagicJack. I just ported my NetTalk number to the App Fring on my Iphone and it works like a charm! Another thing that's cool is that you don't have to have your PC/Mac running at all times for it to work. You just plug it into a electical socket and another goes to the router and of course the Phone jack goes into the device. I will keep you guys posted after doing more testing. When I tested the Iphone App Fring with my friend, he did notice a little Echo when I called him using my Iphone with NetTalk over 3g & WiFi to his phone.