I have the 15" on a GMQ Pro frame, I'm saving for the stitch regulator I feel I need it to do free motion designs. I do pantographs now because that just takes a good rythm. If I'd had 10,000.00 to spend I would have bought something else but this one fit my budget and I love her, I'm also self taught through books and videos. There is a Bailey yahoo group that has lots of knowledge to share.