I'd go to Paducah. I would love to go to Houston but I don't think my back can take that much walking. Paducah is smaller but still plenty big enough.
But since I don't live that close to Paducah and don't really have that much money to spend this year I'll be going to the quilt show in Denver the last weekend of April. There aren't as many quilts or vendors but there's still plenty of nice things to see and spend money on.