I like the standard velocity cci's....a bit more spendy but much more quiet.....I have air guns that are louder.
To me this stupid stuff is really fun for me.....I do it with rim fire and put a bunch in my wagon with a 22 and off I go.....I do the same with center fire, I will workup 5 of a given recipe and see what happens....then out of the winners of that short test I will work up a batch of 20 and see whats what.
To me this is where the fun is....I sit down there with a ton of garbage and just have myself a ball.
Not applicable to the rim fire topic, just all the garbage I haul around when I am playing with this stuff.