[drgshmcm]

Woods- ball closer to left heel than center, but more center than some
All Irons- middle of stance (unless I am doing some kind of shot-shape, hi, low etc)
Wedges - middle (same as irons on shot shape)

Actual stance is shoulder to very slightly larger than shoulder width. Toes are in/out/straight to target, it varies and again depends on what I am trying to do with the shot.

Weridly enough I like to chip further back in my stance than most, I find that when I do miss-strike my chips occasionally, I get a little more forgiveness this way.