Martin Phosphor bronze Medium gauge. I have a reasonably light but firm touch, and I rarely if ever break a string while picking. I use them on all 4 of my guitars and like the brightness of tone.
I can't stand Elixirs. I like to deaden the strings myself - I don't like them to come pre-deadened.
Oh yeah, I change my strings every week, so I buy them in bulk just like ol' DADGBE up there.

Seamus