I agree that the thread sets are the best value. LOVE my thread sets! Also, they give a 15% discount on your first order. If you're not sure, call or email to get a sample to try the thread out in your machine. I should have done that but instead took a chance and ordered a couple of thread sets. I'm really glad I did, because I love the thread, but I would have been out that money if it hadn't worked well for me. I've seen a couple of posts from quilters who said their machines will take any thread except Glide, but have no idea why that might be so. Most quilters, like me, find that it eliminates shredding and breaking completely, plus I really like the bit of shine it adds to my quilting.