I personally like decentralized exchanges like ForkDelta, TokenStore, etc.
But unfourtenately only erc-20 tokens are listed there, that is why I also use CEX, HitBTC, BInance.
I don't like decentralized exchanges since the value of token will drop below ICO price. I would prefer to use centralized exchange like Binance which is a popular exchange now with high volume and small transaction fees.