So far I have tried Binance, IDEX, Etherdelta, Kraken and Kucoin. I have invested some in legolas aswell, but they dont have a ready product yet.

So far I find Kucoin the best out of the centralized exchages that I have tried, Binance is also good. Between the decentralized exchanges, I find IDEX to be the best one.

But I hope that I can say that NEX and Legolas are the best ones later this year, but that is yet to happen.