Nothing surprises me about Comcast ;-) It's definitely better in some places than others though. I was about to say Verizon FiOS is like heaven when we have a customer with it, but their new "Quantum" routers have serious issues with SIP signaling where random phones don't ring, or phones keep ringing after calls are answered. We immediately replace the Quantum routers with something else and all of the problems go away. We've literally never gotten any other complaint from a FiOS customer (and now we get none because we know to switch the router out before setting them up). My fear is that Comcast will start doing the same thing. So far so good with their issued modem/router units (knock on wood), but the huge problem with Comcast is that if you have a static IP, you HAVE to use their modem/router and there is no way around it. What happens when their routers start causing VoIP issues but the customer has to have a static IP? Then what? And if you're wondering why Comcast requires you to use their modem/router when you have static IPs, it has to do with a combination of how they handle subnetting and their specific implementation of RIP. Basically comes down to how they have decided to ensure you aren't announcing the wrong IPs. And no, bridge mode might not be the solution either because their bridge mode is still doing Layer 3 functionality.