PRACTICE AMMOS:
People that reload know that the brass is the most expensive component. So, if you don't reload, why buy it to throw it away?
The aircraft grade aluminum CCI Blazer cases are perfectly adequate for 1X use, and the cartridges themselves have performed flawlessly for me over thousands of rounds, in 9 mm, .45 ACP and 10 mm. It is admittedly ugly stuff--looking like Soviet Block "People's Ammo", but it works! CCI Blazer is clean burning, quality practice ammo, at a great price! I get most of mine from Natchez, as well.
Winchester White Box is reliable practice ammo at a great price; but it is filthy burning stuff--my gun looks like my grill after 250-rounds! But it always cleans up.
Blazer Brass is the crappiest brass-cased ammo I've encountered, and I received two shipments of faulty .45 ACP cartridges, which varied up to 1/8" in length (the shorter ones would not feed). The 9 mm worked perfectly but was also ratty looking stuff for new OEM ammo.
I used Mag Tech from MidwayUSA, in 9 mm and .45 ACP for a while, and loved the stuff! Beautifully made ammo at cheap prices! The stuff suddenly back ordered for six months, and then the price went through the ceiling!
Remington/UMC is decent stuff, when it can be had on sale. It's loud and snappy (which is fun), and a bit dirty burning. I did receive one 9 mm cartridge with a split case, and I had another 9 mm fail to fire.
Remington 115 gr 9 mm can occasionally be had on sale in my area, for less than Natchez with shipping... It's a bit snappy, but nice quality ammo, and cleaner burning than the UMC.
CARRY AMMO:
For SD/HD we currently use Double Tap in 9 mm, 10 mm & .45 ACP.
--Ray