Keepsake Quilting, Nancy's Notions, Fat Quarter shop, Shabby Fabrics, all have given good service and pricing. Nancy's has knowledgeable people you can chat with, the rest are great if you call them or email. Some shops will send you a swatch or a cut-off strip for a small fee. fabric.com sent me a bunch of swatches which was very helpful.
Equilter.com has some good sales and a wide selection.
Fort Worth has very good service -
http://www.fortworthfabricstudio.com/
cottonclub.com has the fossil fern club and thread clubs and they are great people to deal with, so helpful!.
Speaking of thread, Superior threads is a good site and thread-experts!
I have done some reproductions and
http://www.commonthreadsquilting.com/ has lovely civil war fabric and all that.
There, that's my faves! Happy motherhood, joy and blessings to you!