There's a store about an hour from where I live that has an awesome selection. When they go to the local quilt shows, I always pick some up to build up my own stash. I've learned what I like. I am finishing up a quilt that I actually had to drive to the store w/ my quilt to get something because I didn't have anything that would work.
But, to answer someone's question, I don't find quilt shows cater to hand-quilters at all.