Well, myself and some other people I have seen have been using ZC to trade for minerals/broken part to earn gralats, so I guess it all depends on what you prefer, I like furniture because I have every hat I could want and rippers  so gralats are where its at for me. |
You must get the legendary purple hat on your iOS ;0
I find ZC to be pretty useless outside of getting some gimmicky melees and a gun.