anyone?

Can you suggest any escrow agents / agencies that can operate both ETH and fiat?
The amounts of transactions 5000-10000 ETH.

We are looking at:
1. tokenmarket.net
2. chip-chap.com - the social accounts of this service are blocked. Is it alive?
3. openledger.info / openledger.io
4. arbi.expert - not so many clients. Is it trusted?
5. payfair.io

To insure our ETH clients - we want find an escrow to keep ETH and transfer fiat to sellers at each stage of a deal.