Iwill say Unique. I shoot a lot of BP, so Unique doesn't seem that dirty to me. Meters ok for me, might be a question of equipment or technique. I can load anything from .25 ACP (if I wanted to, butI don't load it!) to .45 Colt, and everything in between. Not the best choice for many cartridges, but workable in all of them. It is also very useful as a cast bullet powder in many rifle cartridges. I always have Unique on hand.