RK Kona solids are my #1 got to - they are great quality, durable and quilt up SO nicely! Even when making HSTs, I find that the bias stretch is easy to work with and will maintain it's shape even with firm pressing (gotta keep those seam allowances FLAT!)
This is a quilt that I pieced together, and first attempt with a black background. The black colour is a true black-black and not a green- or purple-black like some other brands tend to be. I absolutely love how the fabric held my quilting stitches.