Winchester PDX1 180 grain Bonded Jacketed Hollow Points, however I am slowly slinking over towards the 165 grain variant.
I bought a box of Federal 165 grain HSTs on impulse the other day, haven't tried em out yet. They are marketed as "tactical" and "law enforcement." I'll report back.
Reporting back...I'm loving the Federal HST 165 gr. I like the little bit of added range, and ballistically they are one of the most devastating rounds for self defense IMO.
I've got some Underwood 150 grain and some 135 grain JHPs on order. Will report back.