I love the Presencia. I learned about it while in a Harriett Hargrave quilting class, and you can buy it off her website. I use the 60/3, which is just as strong, but finer than 50/3. I have never used Aurifil, because it was my understanding that it is 50/2. I may be wrong; if so, mea culpa. I was using Gutterman, which is very linty, but since I clean my bobbin area every time I change a bobbin, I don't mind. I purchased the Presencia in cones of the basic neutral colors (black, white, ecru, taupe, and gray). I think I paid $25 a cone, which was the most I had ever paid for thread, but it is worth every penny.