The most trusted people should be those who have held on to large amounts of others money and returned it in due course, but even that can be used to build up confidence for a scam later on so I'd always advise caution with any trade. I also don't think users merely busting scams or scammers should necessarily equate to them being trusted with your money.
I think the most trust users in the forum is : satoshi .
Really? If satoshi came back today and asked you for a loan would you give him it?