Button 3, and I use it on BioShock Infinite.
Mass Effect 3 was a close contender for that (obviously I can wait for Skyrim and other 2011 games).
I don't really have any great desire to play many 360 games that aren't available on PC, so I didn't consider that one. Nothing prevents me from buying the games in option one or two, so I didn't consider those either.







