OK - here is my 5 cents' worth!
WEB FABRICS in Purcilleville VA. Has a great storefront and a huge web business. Always qulaity fabrics for $1-$2 less than most other LQS in my area. Owner is Carlye - who is great! Always has some type of community service project going - great fun way to spend a few hours.
Second one is "Wilson's, Your Favorite Quilt Shop" - in Hagerstown MD. YUP that is the name of the shop - if you don't believe me - check out their web site. Wonderful fabrics - everyone is very knowledgable and helpful - AND they also sell Pfaf and Viking machines - so they have embroidery designs and software as well. Great classes - displays at the store are ever changing, and are wonderful inspirations.
Third is Patches Quilt Shop in Mt Airy, MD. - WOW - over 6000 bolts of fabric in a large Victorian era home on Main St. Huge classroom on the 2nd floor - Friendly staff - and a nice supply of just about every fabric type you would ever want or need.