I think fast food hamburgers and "gourmet" restaurant hamburgers are two separate categories. I still maintain that In-N-Out is my favorite fast food burger (although I occasionally get a craving for a Big Mac).

When it comes to restaurant burgers, I really like Red Robin and Islands, both of which have Hawaiian burgers (Terriyaki and Pineapple) that are wonderful. Red Robin also has great steak fries and seasoning.

I don't think I've been to Fuddruckers in probably 10 years. I think I'll have to head to the one around the corner from me and try it out.