I honestly do not really trust Bitmex. They manipulate the price. I have not used it for a long time. Almost no difference what to choose, the main thing that it was something reliable
Why do you say that? Many trust Bitmex.
https://revain.org/exchanges/bitmex. As you can see, there is a reason to trust this exchange - 4,7 / 5. 4,7 stars -this is a good indicator.