DO NOT buy your MX-3000 from an unauthorized dealer. Buy from "proremotes.com" or the like. Universal has cut off support for remotes purchased from "gray market" sources. You wont be able to update your software. See remotecentral.com for info (the universal forum).
I bought mine from an Ebay dealer yr ago and now i'm fudged. No more software support!
As for the cable management - I use these cool little anchors that screw in and then have little slots for the zip-ties to thread through. They come in several sizes and are in-valuable when trying to organize a non-metal rack.
I dont know the name of them - perhaps someone else has used them and can help us out...
In an average home theater room there are 1,257 objects Chuck Norris could use to kill you, including the room itself. There are no weapons of mass destruction. Just Chuck Norris.