Most RPS, All grades of Diablo, All system-x, the list goes on
Cocker with .687 longbow
Longbow or freak both worked well
Breaks on Impact
Fill is bright
easy cleanup no stains
Fill is a little thin- great for rec-ball and laid back tournaments.
These are quality paintballs for the price, I got a great deal because I cleaned out my local store of them as a bulk deal. Formula 13 is great if you are playing in anything where you do not want to stain the hell out of the other guys(rec-ball, non-money tourneys), or you know the other side doesn't wipe.
Good buy especially for the cash, grab a coupla cases and give it a try.