What are the best decentralised exchanges out there, and why are they good?
There is only one that I know about - etherdelta.com. It is good because of trading directly to/from your wallet to another user's wallet. There is no middleman who can be unfair.
I agree with you, I don't like waves dex much. Use of etherdelta may be a bit difficult but I think it is the best decentralized exchange in terms of safety.