I am always annoyed by etherdelta's user interface. It is hard to use usually in mobile device and hard to scroll down especially when buying or selling. Unlike other trading sites have good UI. I can't stop using etherdelta because most of my tokens are only tradable in their slow site.
At least Etherdelta works, but look at the Idex, you can´t trade for several days, people are losing their money. That´s why I like bigger exchanges.