Zcoin is the only coin to date to implement Merkle Tree Proof verifications which blows Monero, Zcash and all other anons out of the water staying scalable, lightweight and superfast... therefore I see Zcoin as might being the best pick of '17
The zerocoin protocol is different from all other anon coins, in that it does not use mixing. It uses something called Zero Knowledge Proofs, which completely eliminates that trail between transactions, making it immune to Blockchain analysis. As far as I can tell, they have the leading tech and a slack following of more than 1000 users. It is only a matter of time before the market realizes this and migrates to Zcoin. See this video for an explanation:
Furthermore, Zcoin will be implementing Merkle Tree Proof verifications (MTP) by the end of June 17', making it the first coin to do so - which will undoubtedly create a lot of hype surrounding this coin.
Current price per coin (XCZ/USD) $11.94
Current market cap $27,670,209