I have their entire collection of threads in both polyester and cottons. I love them though the cotton threads do produce a bunch of lint. The polyester does not produce as much and its very strong. I rarely ever have a thread break in fact almost never and I have my top tension fairly tight. I have an Innova with a robotic system (MQR) and quilt at a 500 rpm speed, 12 stitches per inch though my robotics sets the speed most likely. I love their prices and would have jumped on their latest sale but I have more than enough threads now as I try to keep 3 spools of their 1,200 colors at all times. When I know they're going to discontinue a color I know I'll use a bunch I stock up with at least 5-7 spools. I guess that shows just how much I like their threads. I also use Auriful but their prices are a bit high for me.