We just picked discs for our tourney and went through DD, although the idea behind the disc choices can still work. We went with a mix of some of the more popular trilogy discs and some brand new ones. They get two discs each in their pack, so we actually picked 10 different molds, 5 molds in two different plastics. They get to choose 1 from each of the two plastics. Maybe that was too many molds, but it gives them a lot of choices. We got it all setup online with dg scene for the registration, so they pick what they want when they register. Stick their discs and other players pack stuff in a zip lock bag, and bang, you're done. They don't get to pick colors, but it makes registration easier.