I like the colors of the single spools but I started buying the Essential Pro 100% poly size 70/3. It's lint free and great for piecing and for bobbin. It's a great value.
I noticed the cotton spools are listed as long staple cotton not Egyptian cotton. I think it use to be listed as Egyptian. This may be the reason for the change in performance. I would rather CT charge more and have the better quality thread. It's my one stop quilt shop!