I have the Bernina 440QE with the stitch regulator and love love it wouldn't trade it for anything as I do all my own quilting on it and yes it is possible to quilt a queen size quilt on it and also the Bernina has the very best stitch of any machine I have used the stitch regulator to straight stitch in the ditch and it was the best quilt in the ditch I ever did I also use it for free motion embroidery can take any stamped embroidery pattern and use my machine NO would not get rid of my stitch regulator for anything