I recommend Kraken, especially for corporate accounts. They actually have real support that cares. While I was trying to set up my account they kept asking for

I recommend Kraken, especially for corporate accounts. They actually have real support that cares. While I was trying to set up my account they kept asking for more and more information into the corporate structure. I told them "guys, this is just a corporate account, we are going to be trading a limited balance, this is not a market maker, why are you asking us as if we are going to be trading millions monthly". They actually empathized and proceeded to open the account without ridiculous scrutiny.