Personally, I prefer to try and do it as "traditionally' as possible....i.e., NO plastic of any kind.
I carry my powder premeasured in glass vials fitted with a cork....I can pull the cork, pour my charge, then ram a ball home with a starter block and do it just about as quickly as someone with a 'speed loader (just an FYI....unless you practice with one of them 'speedloaders, they ain't so 'speedy'
).
I keep my shot in a paper roll....used to just drop the paper tube down on top of the wadding, but some of them didn't break open and functioned as a slug, so I'm going to start breaking them and pouring the shot on top of the wad.