SysCoin has been around the block for awhile now, and they are light years ahead of other coins with their ecosystem of online marketplace wallet feature.
Check out their site!
They are also listed on major exchanges like Yobit, Bittrex, and Poloniex, not to mention they have an online marketplace wallet feature built-in. Definitely good to go with SYS either as a player, or as an investor.
What a cool site.