Far and away, my most used powders are:
Bullseye
Power Pistol
296
N110
I load for almost everything modern from .32 S&W to .480 Ruger.
.32 S&W Long
.32 H&R Mag
.327 Federal Mag
.38 Spcl
.357 Mag
.41 Mag
.44 Spcl
.44 Mag
.45 Colt
.454 Casull
.480 Ruger
.380 acp
9mm Para
.40 S&W
10mm
.45acp
Before Power Pistol came out, I used a lot of Blue Dot and Green Dot in pistol chamberings. When I ran out of Blue Dot, I tried Power Pistol, and haven't looked back.
I still have about 2 lbs of Green Dot. I only use it for .32 S&W. When (if ever) it's gone, I'll use Power Pistol for that.
It'll be quite a while. You can load up a lot of cartridges when you only use 3 grains at a time.