Are White Castles in that many areas? In my travels I don't remember seeing that many, I know they are in Ohio, New Jersey, and maybe somewhere in the Midwest, but it seems like I have run into more Krystals.
In my youth I had a slight preference for Krystals, they seemed a little greasier, which of course was a good thing!
I wonder if Krystal still has those criss-cross fries, those were a bit hit too! I probably haven't eaten at one in 10 years though, oh the good old days!