I only load 9mm.

I'm an n-320 snob, but I pay dearly for it. That being said, over the life of a pound of powder, the cost is tiny. N320 is temp stable, meters consistently, burns clean and doesn't smoke as bad with molly bullets. That being said, it is impossible to find. I snatched up 8lbs of it the other day from Powder Valley only because I happened to check FB right when they announced a big shipment. That shit didn't last an hour.

I've heard great things about WSF (slower) and WST (faster) and Solo1000 (faster). Of course lot's of people use titegroup, but that shit smokes like crazy, is filthy and somewhat temp sensitive.