I prefer Ethereum and Privcy. Ethereum, no need to talk about with their great technology and mass adaption. Privcy is doing airdrop and currently trading on exchange. Even i wear their signiture, i have also bought some on exchange because it is better then deeponion in terms of privacy and anonymous transactions.
Ethereum, Ethereum Classic, EOS though the outcome seems not favorable after the main net was being launch. I like Privcy but they dont have an actual airdrop, its a campaign. I think I will wait it if its on the exchange already.