I like Moda bella solids. They have a really nice sheen and drape. I use kona too. I really love a line that's made of a blend of bamboo and cotton fibers -- once it's quitled. It frays and wrinkles more than cotton, making it a bit of a pain to work with, but in a finished product it's really nice. Sorry I can't recall the brand name. They carry it at Pacific Fabrics.
rST