From the 80's to the 2000's I carried whatever "Uncle" provided. (I still have some but will shoot it up as training ammo over time.)
Since I no longer qualify for free carry ammo I've tried to carry ammo which has proven effective in the field or via testing.
Current carry is Federal HST 147gr standard in my 9mm Glocks. (I also have some of the HST 124gr +P, and 124gr standard Gold Dots.)
Hornady Critical Defense is available for those times I have to be in NJ to visit family in order to avoid the hassle of having to prove the legality of hollow points under LEOSA. In NYC I only have to concern myself with magazine capacity. And so it goes.
Like others, I keep an eye on Doc GKR's list of "best qualified" ammo for the handful of firearms in my small stable.