My husband and I are coming to Chicago at the end of the month and staying in the Magnificent Mile area. We want to celebrate his birthday somewhere with good seafood and that is nice, but not too formal or overly expensive. I'm thinking like Crofton on Wells kind of $$$ and quiet ambience. He really likes seafood, and looking at some of the posts here, it seems Spring is one of the favorites. Any thoughts or other recommendations? Thanks!