I would not use any escrows that are off the forum and you haven't heard of.

This one is an obvious scam to anyone that has the slightest experience with dealing with crypto escrows. The thing is that there is only a handful of escrows that I would come to remotely trusting, possibly Bitify being one of them and even for that one I'd be extremely cautious with large amounts.

All the rest of the escrows that have absolutely no branding, you have no idea about, and someone is recommending you to use in a deal with them is just a scam, no doubt about it. It wouldn't be surprising if your "buyers" were in with this scam as well, working together with a team of scammers and/or owning the site itself.