Zon drops still useful?

[Karazykid]

The last time I played was when the event with the zonspheres was going on. I've still got like 20 of em. Those ever gonna be useful or should I just scrap em?

[Jim Stelnium]

99 Zonspheres (or roughly 3000 Zon drops) = 1 Falclaw, most likely the best trade in for them.

Not sure if this mission is up but here's the link:

http://psupedia.info/Thunderfest_Deals