I tried 4 different platforms, but chose the BitSeven platform, there were a lot of advantages. And what do you think about this platform?
The main advantage of bitseven is that there are no "overload" issues as at BitMEX.
I trade on both exchanges, and I like bitseven more than bitmex at this moment.
There were some doubts because it is relatively new platform, but withdrawals were done fast and now I'm sure that it is reliable company.