Thanks for the input so far!! Howard, your comment on Chicagoland was really helpful. I really liked meeting Greg of Oak Hill Gardens at the spring AOS meeting in OKC and I guess I had that kind of venue in mind.
THe WOC in Miami was fantastic beyond my imaginings. I would love to go to Singapore for the next one....might have to get a job before that could happen...

So, on the list, presently:
Redlands, which did look really cool
SBO - hey, it's Santa Barbara!
Pacific Orchid Expo
NYBG
National Arboretum - did a fab show several years back & when I was in DC, I went!
For the future:
RHS
Peterborough
Has anyone ever gone to the Brooklyn Botanical Gardens? I don't know if they have a show, but they have published some good orchid books.