Customer support at Mercury Fintech (mercury-fintech.com) seems to be run by people who have never used the platform. Every time I call with an issue, I end up explaining how their own system works before they can help me. It would be funny if my money was not involved.
Pros: Multi-currency support|Real-time alerts|Reliable uptime
Cons: Research section could be deeper|Withdrawal takes 1-2 business days