Bullion (CBX) is the truly decentralized cryptocurrency that has all the right specifications for investment: Quick 65 second blocks for fast transactions, 100% Proof-of-Stake providing Green energy efficiency, scarcity (about 1 million CBX in circulation) and new coin generation (inflation) maintained at a healthy yearly 2%. However interest earnings to investors who run the Bullion Vault are closer to 6-8% per year (see info below regarding Bullion's original PoSP algorithm that makes this possible). The thing that is the most valuable though, is Bullion's dev team which has been developing it since 2013.