Just my opinion, based on my reading, and SOME testing in water jugs, but I have seen some of the HP's with smaller openings fail to expand, and over penetrate.
I got good expansion from Gold Dots and they have a good reputation. I think Mas has recommended Gold Dots and Ranger T's.
Luke 22:36 He said to them, ď... if you donít have a Glock, sell your cloak and buy one."
NRA, GSSF, IDPA