We are in the building process and looking for the best system for communication within the house (other than screaming). We are also going to be using a home automation/security system, but haven't come up with anything for communicating from room-to-room (2 stories, 6300 sq ft) that can tie into it. Wall intercom systems that we have seen have all look dated and just ugly. What's everyone using???? Thanks for your input, really appreciated.