I agree with others. I made a quilt years ago with mostly fabric from JoAnn's, and it's one of the best quilts I ever made! Loved to death, too.
However, I just wanted to point out that the term "Kona solids" is not specific. There are Kona solids, Kona Bay solids, and Kaufman Kona solids. The manufacturer of the Kona solid makes a difference in the fabric quality. Here is an older thread on that topic:
http://www.quiltingboard.com/main-f1...s-t183557.html