I love this system. The software is incredible. The programs can be just as incredible as you can imagine (within reason). I program all of our controll systems including Crestron and for the low budget customer you cannot go wrong with the MZC66. In my experience using anything other than the master keypad is useless. Does any one else have any suggestions for uses for keypads other than the master? My only complaint is the keypad. I would really love the ability to engrave the keypad with what I want it to say, but we can't have it all :)