Tony, for side-view ranchu the first thing to look for is a nice smooth curve on the back. Its hard to get a smooth curve without lumps. The Chinese say that in side profile the back should have the shape of a pocket comb. That doesn't help us much because pocket combs in the west are straight instead of curved. Come to think of it, its been a while since I saw anyone carry a pocket comb of any shape. But, once you know what a Chinese pocket comb looks like you get the idea. Next look for a sharp angle where the tail fin meets the tail tube. It's preferably about 45-55 degrees. The back curve and the tail angle are sort of the same thing because if the back has a good curve then the peduncle will sort of point downward which makes the angle with the caudal fin sharper.
For top-view ranchu first look for a thick (wide) caudal peduncle (tail tube). Then look for a good tail shape. In a young fish the wen will not be fully developed so the front of the head may not yet have that squared-off look. Nisai and oya should have a squared-off head. Finally, look for a long body and small neatly-arranged scales down the back.
Joe, I would love to go to a goldfish show. However, I don't travel unless it's an emergency so they will have to have it here

If we ever get our act together for a show, hopefully it will be koi and goldfish. I think Hawaii needs to have a koi and goldfish extravaganza which draws people from US, Japan, China, Thailand, etc. They do international conferences here with speakers from all over. Everyone in the audience gets a head-set with translation into their own language. Sort of a United Nations thing.
You can find some nice goldfish in local stores compared to what I saw on the east coast. It sounds like the west coast has a pretty good selection too.
-stev ehop k