Is bitshares a coin? I don't think so buddy. As far as I heard Darkcoin masternode anonymity wasn't fully developed and has issue for True Anonymity. Darkcoin is really valuable because speculators and its name. Monero has already implemented ring signatures and therefore already has established true anonymity rather than a theoretical anonymity(Darkcoin). As far as trusting which coin for true anonymous transactions, I rather go with Monero.  

NXT is very well developed but my issue is the POS bag holders situation. Everyone wants to stake large amounts of NXT, yet there is little incentive to spend NXT. The alternative to NXT IMO is NEM, built from the ground up like NXT, but with PoI (Proof of Importance) algorithm oppose to Proof of Stake. NEM incentives users to regularly trade NEMs rather than hoarding and staking. Real economies are only productive if there is a circulation of money. In a NXT economy, people are incentive to hoard not spend and likely to fail as real economy. In NEM economy, users are encouraged to actively received and send NEMS to other accounts to raise the Importance to harvest more NEM, therefore has a better chance as a real economy.      

Bitshares: BitShares is a family of DACs that implement the business model of a bank and exchange. BitShares X offers a bank account where funds can be transferred in seconds anywhere in the world with more privacy and security than a Swiss bank account and the account can never be frozen, funds cannot be seized, and the bank can never face collapse. Unlike existing banks, account balance can be denominated in gold, silver, oil, or other commodities in addition to national currencies. *Its not a coin, its a platform for commodities.

Just my 2 cents.