I use solids in almost every quilt that I make. I use both Kona and Bella and have a pretty good stash of the two. I often mix both of them into a quilt. I also have Riley Blake and MM cotton couture solids in my stash. So you can see that I am not loyal to one company or another. If I am being totally honest, neither Kona or Bella are that great. They both have their issues. For me, it is that Kona frays alot and I have tension issues with quilting Bella. But if I had to choose between them, it would be Bella.