Not to bring up a subject that's been beaten to death, please be aware that Kona has become sort of a generic term.
The "Kona" cottons in Joann's are NOT the same as the Robert Kaufman Kona Solids available at your LQS,
unless the bolt says Kaufman.
Not all fabrics labelled Kona are created the same way, however the Kaufman brand has strict standards:
http://www.quiltingboard.com/main-f1...tml#post746926
These differences aren't so noticeable on the white fabric, but can be on the colors and black.
I understand it can be a price consideration, but if you can, here are two fabulous black fabrics.
My preference is always the Michael Miller, but the Kaufman solid is another alternative:
http://www.hancocks-paducah.com/Item...Black--srcin-1
This black also has its fans (but I think that's just because they haven't yet tried the MM ):
http://www.keepsakequilting.com/productdetail/9738.htm