I've done the tour there.. and visited their bar at Rehobeth Beach. My favorite is Midas Touch.. but I really like a lot of their beers. It's much cheaper at the factory than in the stores.. so you do get a real discount when you're there... but it's truly seasonal so you may not get your favorite... but you will definitely get to try something new... Some of their low-volume stuff they only serve at the brewery and bar.
I like them as a company also, very smart, efficient and clean.
-C