asymmetrical for me, I've yet to use the wii pro controller, but with the xbox controller it keeps my hands at thumbs at a comfortable distance. Been using psx pads for years, great pads, but I got big hands and using small controllers with games that require dual sticks to be used it feels like I got my hands crammed together. Also the asymmetrical layout feels natural to me, having the main stick opposite to the face buttons feels good.