Kona cotton has been around for many years and comes in nearly every color imaginable. Kona has been the favorite solid for applique work for decades. www.Hancocks-Paducah.com carries the full line. Bella cotton is a really nice cotton and more and more stores are carrying it all the time. I prefer the feel of Bella and buy it whenever I can, but if I need a color that's not available in Bella I don't hesitate to use Kona. The Bella and Kona cost about the same, but Kona has a little more texture to it and Bella is smoother and just a smidge thinner than Kona.