I agree with Dezertsuz, Cosmo is top of the line embroidery floss. It doesn't kink and provides a smooth finish. They have a great range of colors. It would great to see a Drop package with a good range of colors.
I have used ALL of the threads shown. Far and away, the nicest finished look and the least linty is Cosmo. I think a lot of people haven't had a chance to try it. Aurifil is also quite good, and probably not many people have had a chance with that, either.