They look very similar to Bitmex. I am currently using that only.
Maybe I will try them too and see how good they exactly are.
what do you mean by bitmex, is it the rules or performance system because from what I know some exchanges can be used to buy and sell a coin, but the difference is only the work system and the fee seems to be different, there are cheap ones and some are expensive but I prefer expensive fees because in my opinion an expensive exchange is more trustworthy.