Kona is good.
I also like some of the RocLon ones. They have a cotton sheeting that is fabulous. I am using it for the applique I am starting.
White Solid from Legacy Studios is nice too - REALLY nice hand, opaque, tight weave.
Before you purchase all that you need, I would purchase a quarter yard and make some test blocks. I have been guilty of purchasing all of the fabric that I need, and then not being happy with the outcome.