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The only genuine coins are BTS and SmartCoins like bitUSD, bitGold end other. You will find the list in Assets - SmartCoins. These are backed by collateral eg. safe.
If you want to trade Ether in BitShares DEX you have to trade OPEN.ETH and that is IOU of Openledger. There are many such coins.
IMO Openledger is reliable, but it is a noticeable difference.