About to order a PSA-1 by mailorder. Should I order a Tech 21 MidiMouse, or sthg else like a floorboard with it to control my PSA-1? I don't think I'm gonna use it a lot, so floorboard might be unnessecary. Rocktron has some nice ones. Don't know much about this. A mouse looks really simple though. Any recommendations here? Any MidiMouse users here? Are u satisfied with this thing?