I've been using them for about 6 months now. Its working well. I have comcast for my broadband connection so I've got plenty of speed.

I have it connected with 2 phone lines (I transferred my Verizon line plus a second fax machine line). It also rings my cell and home phones simultaneously.

I disconnected the Verizon lead coming into the house and am using the existing house telephone wires to connect to the router. So now there's really no difference from a user point of view.