The Good
Fiocchi - I bought a brick of .22 WRM ammo last year and found it clean, accurate and consistent in my Savage 93FV - at $1/box cheaper than the Winchester Dyna-whatever I'd been buying at Wally World. I intend to try their .22LR and centerfire stuff next. Had good success with their 2.5 inch 12 gauge in an old LC Smith as well.
Aguila .22 LR Golden Bullet. The way I remember US made .22LR standard ammo, before everything went in bulk boxes with the lube dumped in afterward.
CCI - Consistently good, but so many variations I can never seem to remember what exactly I bought last time that worked so well.
Anything Federal, Hornady or Speer.
Winchester White Box .45 ACP hardball.
The Bad
S&B pistol ammo. That little cup is meant to hold priming compound. It that so hard to remember?
Winchester Wildcat .22 LR. If a little lube is good a whole lot must be better - NOT!
Winchester and Remington Bulk Pack .22 LR (see previous statement re: lube).
The Ugly
Those black Russian shotgun shells. Less than a box made the barrel look like a woodstove pipe after a long winter burning phone poles.
Black Hills .45 Auto Rim
PMC .357 Mag.
Dardick Trounds - Down to my last case and when these are gone I'll never buy another one.