Looking at Sheldon's site, 700A is 642mm (and marked as obsolete), and 700b is 635, or the roadster style 28."
I"m assuming that means that all of the Raleigh roadsters, Pashleys, and a lot of Dutch bikes are 700B.
I'd like to try 584, maybe on the Fuji, but the cost of a wheelset is rather prohibitive.
I wish that I could find a relatively inexpensive set of new Raleigh pattern (read: rod brake) 590's. Be even better if someone made them in aluminum. But, while I'm wishing, I'd also like a pony