I am looking for some GC controllers to play SSBB with. I saw these on Ebay, but I don't know what kind of quality they are. Does anyone have experience with them or would I be better off buying some used official GC controllers? http://cgi.ebay.com/2-INDIGO-CONTROLLERS-FOR-NINTENDO-GC-GAMECUBE-WII-EXT_W0QQitemZ150223514312QQihZ005QQcategoryZ41042QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Also, I have heard that the Platinum colored official GC controllers are less responsive than the other colors. Is this true? Thanks for the help.