I've been to this show a few times and it's been so-so. Chuck from Heroic Chameleons (a board sponsor) was there for 2 of the shows at least, and his chameleons are always very cool to see. The last show was kind of weak chameleon wise.
I still haven't got out to the Hamburg show, which is supposedly a bigger show.
The Hamburg show is great but gets very crowed, and parking can be a real pain in the rump. I would assume that most of the breeders that do Hamburg also do Reading sinse its only like 20 miles difference.