I too have a lot of faves.
Pistol.
ww231, 38 spl mostly, good for 9mm too, have used it in others to good effect, nearly identical to HP38.
ww 452AA, sadly no longer made, my fave .45acp powder, clean and accurate.
H110, .357 mag, .41 mag, and .44 mag. WW 296 still a good powder for all magnum pistol loads.
The new WW powders I am just experimenting with, and understand work well. I have 1lb of each. starting with ww supertarget.
Hi score 800x, 10mm, when you like it hot.
HI score 700x 9mm, compressed load.
2400 for .44 spl, and .45 Colt
n350 for .45 super
Bullseye, dirty but practical for many hand gun rounds, bulky and go's a long way in hard times.
Rifle in no particular order.
Varget for precision .308, .243 Ackley, 7mm/08
Imr 4350, 7/08, .338 win mag, .243 and or .243 Ackley, 7mm IHMSA.
for .223/5.56, it depends on the rifle and the bullet weight, aa2520, 2015, blc2, Varget, ww 748
748 works wonders in .222
When I find a powder that works, either with 1 gun, or multiple, I do buy 8 lb kegs, good for rainy days.
I know 1 sniper that is working with trail boss for suppressed rifles shooting very heavy bullets, and it shows great promise.