In Northern Virginia there are quite a few LQSs and the customer service and fabric styles vary widely.
My absolute favorite is Circle Sewing Studio right down route 123 in Lake Ridge, with batiks, reproductions, blenders, thirties, etc. and some whimsy fabric. Parker is the owner, she has a great set-up with machines available for your use right there on the salesfloor. She and Cary are the best and always a great help. There is a great group of quilters who hang out which is fine because Parker loves to have people just drop by and sew awhile, remember it is the Circle Sewing Studio.
My other favorite is a little farther west in Warrenton, Kelly Ann's Quilting. Kelly Ann also has a varied fabric collection in her shop, great staff and service and a fun blog.