I'm on the fence about throwing the ones I've got. On one hand, they look and feel nice and I'd love to chuck them. On the other hand, there are reports of them flying a little differently than the production Buzzz'es that I have in my bag currently. I'd rather not become dependent on a limited disc. Couple that with the fact that they'll be good trade bait and likely worth two production discs in trade before long and I'm leaning towards trading mine away.
I'm going to take one I like and throw it, the rest will be backups. Though Im not in a hurry to bag any of them because I just got a "regular" tiedyed z buzzz that I'm messing with right now.