I was thinking the same thing.
I have used most of the fast burning powders and unique in my opinion is alot smokier than 231, universal,power pistol, titegroup or the rest of the them. Uniquie (flake) is a very consistent powder but I have never got it to meter as well in my Lee auto-disk as the ball powders do.
I'm sort of partial to titegroup and power pistol but what ever works for you. I use power pistol even in my 357 mag and it so far is the most accurate load Iv'e ever loaded for my S&W model 28. Surprised the hell out of me!
but your talking about 9mm short and long.
Any of the powders mentioned in your replies will work for you.
I must concede that W231 is probably the most talked about and popular though.