I just received a Harmony 880 in the mail today. $149.99 from Amazon as opposed to a brand new one from logitech for $249.99. The thing works amazing. I have a comcast remote and basically it had me hold the comcast remote 2 inches from the Harmony remote while it was hooked up to the computer, press a couple buttons, and viola it was programmed. I have it working for my TV, Comcast HD box, Blu Ray, Xbox 360, AV receiver (as soon as it comes in the mail), and even replaces my fan remote. If you have any issues while using it, it walks you through the problem by trying different steps and you answering if it fixed the problem or not. Better than I even imagined it would be.