Well, I should have voted other but didn't. My actual favorite is "OPA"... Other People's Ammo...for when I get to shoot up theirs in training, since it is free
I have supplied and seen shot up a *lot* of 9mm ammo in the last few years. Geco and Win have worked fine (I really don't know how accurate it is but it is certianly adequate). Norma surplus was very problematic in M-9s but then it was 80's surplus ammo (though it was sealed in plastic battle paks). It works fine in CZ and Brownings.
I suppose being forgetful is just one of those things that automatically accompanies growing old, but something just jostled loose a memory from the last couple of years.
I purchased a CZ75B that came from the factory with a Doktor red dot (same sight sold as the FirePoint or the Tasco). I actually got the sight for free as the whole thing was on sale for less than a regular CZ, but I wanted to put the sight on a carbine of some sort.
Anway, before taking it off I tried it on the gun and by coincidence one of the loads was the Geco ball that I get really cheap for our military classes (Like $105 per M).
That load ran less than 1" at 25 yards from the stock CZ (Win Ranger 127 +P+ was in the 1/2 to 3/4" range and Triton 135 P+ HI-Vel was in the same range).
I noted that when I did take it off and installed nite sights that my groups doubled in size so there must be something to the dots and old eye but I just cannot see a battery operated gizmo on a serious gun unless there is a backup system *instantly* available.
Sorry to say I did not try Win. white box but there is no reason to believe that it is less accurate than the Geco.
I think I might have goofed on my vote, which probably shows up as UMC, if at all. In any event, I use 115 S&B because it's always easy to find either at gun shows or via mail order, and it always goes bang.