Over the last two months I have used Insteon Smartlinc, Houselinc, and now ISY994i. I have the Houselinc running on the Windows Home Server I use for MyMovies. The Houselinc has never missed a beat, but lacks the iOS access of the ISY. The ISY interface to my ipads and iphones works well, but with it I have found some devices not on when they should be and some lights on in the morning that should be off. ( I never had that with Houselinc). Smartlinc did not have the ability to pull the status of the garage doors without adding additional responders that Smartlinc could follow (not so smart a device). I am going to try and configure the ISY to validate each action and if not as desired take the action again to see if this adds reliability. l like the ISY best of the three so far, I just need to work on getting it to be as reliable as the Houselinc was.