I mentioned yesterday that I would try out the Simplicity Deluxe Winder. I used the cone and the regular thread spool with success. It has a tension disk, a speed control button and an on/off button which the smaller model did not have. I found if I use higher tension and higher speed control, it winds quite evenly. Otherwise, it winds unevenly and you end up with less thread on the bobbin. There is a button by the side of the bobbin holder which helps you determine how full the bobbin should be. Works great. I also tested winding from the size L bobbin (with cardboard sizes) to Class 15 bobbin which my Bailey uses. It works well as long as I take off one cardboard side off; this helps the thread to spin off the bobbin smoothly. Since this bobbin is relatively lightweight, I hold the other cardboard side down with my fingertip so that it does not fly off the thread post. At this point, it is a keeper, smile.