I use one. I had the triple play package on Time Warner Cable and canceled that, so I replaced the phone part of that with MagicJack. My father has one that he uses when he travels for business, especially for international calls and such and he recommended it. I love it. It is clear as a bell, sounds way better than a cell phone in fact it sounds like a land line. The best part is you just use your regular phone and you can even choose you number. I have never had a problem being cut off, and neither has my father, who has done extension business with his, and he can afford anything. He just finds it makes way more sense to use one. He buys internet time cheap and uses the MJ, instead of paying crazy phone bills when he is away. It makes sense...and saves money.