I use the CT spools of thread for much of my regular sewing, it is a very nice thread. It is a little thicker than I like for piecing. I started using the Essential Pro cones on my longarm, works great for me, seldom breaks, minimal lint. Decided to try it for piecing, excellent results. I think many of the comments confused the types of thread. Essential Pro is poly cones, I have yet to see it on sale. The spools of thread are cotton and are often on sale. Both are good in my opinion, just different uses. Next time you order fabric, get one spool and one cone and see how you personally like them or not.