For range ammo, whatever is on sale at the time. I've shot lots of Sellier and Bellot, Blazer, WWB, and even the infamous wolf. No problems with any of them.
Lately, though, even cheap ammo isn't cheap, so I'm starting to reload for my pistols.
For the "bang/buck" angle, I really like Monarch green box in the handgun calibers. I could (it's been a while since I bought ammo) buy a box of 50rd. for $5.86. I don't think it's gone up, but I don't really know. It's privi-stamped brass, and cleans up very nicely for reloading.
I know several folks (private armed security and LEO alike) that preferred the Ranger SXT over the Fed. HydraShok and Remington Golden Saber. I've shot the Pow-R-Ball Cor-Bon ammo and liked it a lot. I also hear very good things about the DPX, but never fired it.
While it will no doubt irk the fans of certain brands of ammo, I happen to know the head R&D engineer at one of the USA's major ammunition companies. I asked him what JHP handgun bullet is the "best" and he told me what I posted earlier. All of the major companies' premium JHP loads (XTP, SXT, Golden Saber, Hydra-Shok, DPX, Starfire, etc.) perform close enough that you are well equipped using any of them.
Find the one that (a) functions 100% in your handgun and (b) is the most accurate. But remember, (a) is the most important factor! At present I use Cor-Bon 115 gr.+P DPX in my carry gun and Black Hills 147 gr. JHP in my "nightstand" gun.
We have a local PD that has an "officer's choice" handgun policy that allows them to carry any handgun they can qualify with (but NO single action pistols) as long as it's 9mm Para or larger. Previously they had issued the .40 caliber Beretta 96 and so, for a while officers were required to supply their own ammo - JHPs only - if they used anything but a .40 S&W. But things got so out of hand that the new chief set a policy that the department would issue ALL service ammunition(Speer Gold Dots) and woe unto any officer caught using something else on duty.
At present the department supplies their officers with the 9mm Para, .357 Magnum, .357 SIG, .40 S&W, 10mm Auto, .45 GAP and .45 ACP.
While I agree with the "officer's choice" policy in theory, in fact it looks like a bit of a pain.
32cal flow through problematic cz 70/50s like hot butter, very accurate( i shot 18 rounds off rest into a group smaller than the palm of my hand at 18 paces ) would not cycle rem/ win through a whole clip. reliable due to the extracture grove leans more to european spects / and federal over all,<>school teacher