I purchase AA #7 by the 8 pound jug. Use it mainly for 9 mm. I find it works best for upper end loadings. My notes say that with certain cast bullets, don't go over 7.5 grains. It doesn't compress........I crimp separately and some loads will increase in OAL while waiting to be crimped. I get quite a bit of un-burnt powder in the action of my CZ Scorpion carbine, with the current jug. Like Fiver said, it's changed since I last bought my first 8 pounder. Tried it with heavy for caliber bullets (180 grain), in my 357 Rossi, carbine. Accuracy wasn't as good as 2400 or H-110.
Recently, bought a pound of AA #2, to try. Better for lower velocities loadings, in 9 mm. IMO.
Haven't tried AA#5...............but I do like Accurate powders.
I find that just about any powder will work in pistols. The true test is when you load it for accuracy in a carbine/rifle, chambered in the same caliber. Separates the pepper from the fly $hit.
IMO, can't go wrong with Bullesye, in 9 mm. Pistol or carbine. Also use BE for 38 Spl, 44 Spl and light to moderate loads in my LCR 357 Magnum.