I can not choose one. After all, the choice is great. I like:Binance, Kucoin, Yobit, Etherdelta...
I do not advise you to trust the exchanges. They will also scum in the future. Nothing will exist for a long time. I used to trade in many exchanges. Of these, many have closed. On one exchange, which I liked, there remained more than $ 3000. I was disappointed, because I liked the exchange.
Therefore, do not trust anyone !!!