I've used a wireless 360 controller on my PC for a few years now and I love it.
I've only used it more and more as time has gone by.
I've had to replace the wireless receiver a few times unfortunately but the one I'm using now seems reliable, it's been going strong for a good while.
Over time I've been using the controller for more and more games. Even first person shooters which I would have once seen as blasphemy. I just finished up Thief 4 using it, and before that I used it for Metro Last Light, Crysis 3, Far Cry 3... Tomb Raider...
Honestly I use it for pretty much everything except stuff where a mouse is obviously necessary or superior like Counter-Strike, StarCraft, Diablo 3 - I'll keep using mouse for any sort of clicky fine precision game. Or competitive multiplayer FPS.