Boy if I was planning on buying, I would get to Paducah during quilt week in April. Eleanor Burns has a warehouse of fabric of all kinds and colors for $5 before any of the discounts. Hancocks was $5.98 with another huge selection. Go early in the week for best selection and quietest store.
Marshalls sells some wonderful fabrics. I got some in Paducah and it was gorgeous. I like the Splitter Spatter and Bandana basics almost the best. Good basic cotton goods. I would like to plan a trip there also.
That said, Hancocks has the widest selection. I could easily spend 1/2 a day there checking it all out.