I don’t think I have the gene which lets me blindly trust someone with a transaction, heh. I research every game I buy. My money is guaranteed to be worth something. I want to know my game will be worth something in exchange.
That said, Volko Ruhnke, Eric M. Lang, Corey Konieczka, Rob Daviau, and Vital Lacerda are some of my favorites who are still active.
I just buy wider shelves for the wide-box games: https://imgur.com/a/otbkAdm