Centralized i prefer kucoin and binance.
But decentralized not very good options. I use forkdelta or idex (which is not compeletly decentralized)
forkdelta too low tokens price. And on the stock exchange idex the minimum amount of a transaction is 0.15 ethereum, this is not very convenient when you receive small rewards for bounty.
Both of these exchange sites are still lack of the volume and it will be so difficult to liquidate. But remember the latest case about etherdelta and forkdelta was having the same chance to get subpoena too.
DEX still lack of demand by speculators.