To me the difference is minimal (Then again I'm not a die hard MLG gamer) also take into account dogs, kids, and just generally clumsy adults who can't look for a wire in front of them. --- http://i.imgur.com/HLzCM.gif
A little more food for thought, if you pc game, the wired controller doesn't require a separate adapter, so you could use it there too. Just download the driver for it. Also it doesn't eat batteries or require a charge kit. --- hit share demo...Choose a friend and hit send... Easy as pooping.-DrJoe90
I go for wired simply because I don't really sit that far from my monitor. that, and I can use it for the few PC games I play. And no batteries. (even if I can get an 8 pack of crappy AA's for a buck.) --- I'll be in my bunk... One does not simply walk into Skuldafn.