Personally, I'm cool with 11-14 as optimum, 12 is a little better, I think reliable 13 is perfect.
I like the 147+P HST, it's great, and 180 HST or 165 HST for my .40 pistols.
But, any of these will be fine, and all meet that arbitrary but reasonable 12 inch number-
Hornady XTP (less expansion than most, but known for superb accuracy potential and deep penetration), Remington Golden Saber, Winchester Ranger-T, probably that new Winchester load that looks identical to a Gold Dot, PDX I think, Speer Gold Dot, Cor-Bon DPX (expensive though). I'm sure theres a couple other great ones out there that I forgot, but those are the major ones that you can't go wrong with.
For what it's worth, I have carried generic Remington, Winchester, Georgia Arms, and Fiocchi JHP before and didn't feel that I was any less well-armed, however in a life or death struggle any last drop of performance you can squeeze out of a load is worth it to me.
Plus the HST is so reasonably priced it wasn't difficult for me to get plenty to test my guns for reliability and have a bunch left over.
And I've carried the 124+P HST as well, again, didn't feel any more or less well-armed.