Are you looking for FIAT withdrawal too? If not, I can recommend Kucoin (
https://www.kucoin.com/#/?r=E62l7t).
In my experience, Kucoin is very fast, nicely designed and growing every day. They are already doing server upgrades before it's even necessary, where Kraken for example is doing upgrades way too late and too little.
I'm using Kucoin while waiting for the NVO DEX, I hope this will become a very mainstream DEX with high volume.
If you want to register on Kucoin, you would do me a great favor by using my referral link:
https://www.kucoin.com/#/?r=E62l7t . They also have their own coin (KCS) which is growing steadily. Holders of this coin get small amounts of all the listed coins on Kucoin periodically. The amounts are increasing with volume increases on Kucoin itself.