Xantech used here as well. Has worked well despite my getting the wrong type unit. if you have a plasma screen, get the unit intended for that use.

Plasma screens put out a horrible amount of ir noise and can swamp a repeater. Because i didn't pay attention, I had to locate the Rx about a foot above and 6" behind my plasma. Even in that location, when someone walks past the tv, they reflect enough ir that the blasters light up. I'll really need to get the correct Rx.

I too use a harmony remote. It was because the harmony had to be pointed directly at the plasmas ir port that I bought the repeater.

Edit: the only drawback, it adds another wall wart to the rat nest.