I don't know why you'd get doughnuts anywhere else. These are really great doughnuts, possibly the best I've ever had. They're very fresh and the store hours are great. It feels kind of cheap giving a no-frills bakery five stars so easily, but they do deserve it. I couldn't do the doughnut justice by describing it, but in the age of manufactured supermarket and chain doughnuts, Greenbush's are a real treat.
I recommend trying the "popular" ones first and branching your way out.