I love mine. Got it for Christmas last year. I just finished a UFO that I hated doing the blanket stitching on my old machine, on my F600 it was so fast and easy. No thread breakage or tension issues at all. My only complaint is it was a pain to set down into my desk. The bottom row of buttons and the power cords are positioned badly. But it is worth the hassle and extra cut to have this great machine.