Doing some reading, and CCI seems to be a top brand. You also noted CCI so maybe that is the route to go.
I think all my rat-shot is CCI as well.
Plenty good for most .22s, but expensive, compared to Winchester (or used to be).
Most important thing is to buy a 50 round box and see how it feeds and ejects from YOUR rifle.
Then go with what doesn't cause problems.
/johnny