To me, Dan and Steve are boring and I like Hans. I hope he wins. I don't thinks he's great or anything, but he's the best of what they're giving us to choose from. Hans is very knowledgeable and has a unique perspective on food. He is a little stiff sometimes in front of the camera, but I think that can be corrected with practice. As we've seen, Mario, Emeril, etc. were all pretty bad when they started out. Susannah and Deborah both seem fake to me. It's like they've created these personas that they play out on camera and then they go back to being whoever they really are. I do think Susannah is very good in front of the camera, but I don't find her very compelling. Deborah is kind of a mess. She's well-spoken and inarticulate at the same time.
ETA: Spelling correction and