I'm another Viking fan, with my Designer SE. I haven't used the embroidery module all that much, but there are plans for it in the future. When I have used it--it did a beautiful job. I also love using it for applique--the satin stitch and blanket stitches are perfect!
I also had a Pfaff in the past and loved it, but it was an older machine that wouldn't do everything I wanted. My youngest daughter now owns that one--and it's just waiting for her to get the quilting bug!