I have the MegaQuilter, Next Generation frame by Grace Co., and QBOT. I'm perfectly happy with my setup! Small investment for big results. I have no problem using all cotton thread. Sometimes my rayon/Sulky shreds, so I try to stick with regular thread. Coats & Clark, Star, Essentials by Connecting Threads, all work fine. Make sure to use an Inspira Topstitch needle! Makes all the difference in the world. There is a yahoo group (PfaffHobbyGrandQuilter....) that is very helpful. PM if you have specific questions. Would love to help you!