Corry's list is about it. At least, those are all the LQS's that are in the area. There are several sewing shoppes that also carry quilting machines, some fabrics and some notions. But for a full blown LQS? Corry's list is spot on.
I can tell you further... that Buttonwood carried Janome products and that Quilters Choice in Jupiter is a Bernina dealer. The others, I'm not sure of.