I didn't realize how fortunate I am. I live about one hour from Whittles. As new quilter, I have not been there yet, but all the ladies in my quilt guild rave about their fabric being great quality and reasonably priced.
This company has been around for several generations and is located in Smith's Grove, Kentucky, which is about 20 minutes from Bowling Green, the location of Western Kentucky University, my alma mater.
they do have great items on their website. I haven't heard of the other some of the others you've mentioned, so I'll have to check those out too.