I use Robison Anton, Sulky and Isacord of which I have the most spools. I have had great results with all brands of thread actually with both of my embroidery machines. I do know some machines can be 'picky' about certain brands or the way threads are wound, sometimes it just take a little testing and patience. My first Designer 1 didn't like any poly embroidery threads at all so I used only rayon. So don't be surprised if some threads don't perform perfectly. Some people buy just a few spools of new brands just in case their machine has a 'preference'. HTH