also great for setups where beer might easily be spilled, space is tight or animals can chew controllers- you can place your system anywhere withot having to worry about constantly moving it back and forth, passing controllers around is easy without tangling wires and even in areas with heavy wave distortion, you can switch the frequencies easily if needed
a roommate had the silly habit of leaving the controller turned on which eventually ate the battery life, i got rechargeables so battery lfe is no longer an issue
the only complaint would be a range of colors would be nice, and the control unit should match that color instead of being grey (it is for the plat/silver wavebird)
note- when i was younger, this would have been a great help for whenever my parents complained the system was out, or someone was vacuuming or otherwise getting in the way of the tv, you could just walk around, or leave the system somewhere where it wouldnt draw attention away from your gaming