To check the top reputed exchanger's visit

https://www.bestchange.com/list.html

Check their TS (trust score) and feedbacks

Check they are listed in exchange partners list of PM, OKPAY, Payeer, Advcash, Epay

https://perfectmoney.is/business-partners.html

https://advcash.com/en/about/exchange/

https://www.epay.com/en/exchangers.htm

After all ID, Address, website and account balance verified only they will list in partner page

Dealing with individual person in escrow whose docs are not verified by any financial institution is always a risk.