I have a Bernina frame and a Bernina 820 on it. I looked into a straight stitch mid arm like a Bailey 13 or 15'', but because the platform is not large, the throat space would not be much larger than the 820 for not much difference in price, and when I decided to go to a long arm down the road, I would have a hard time selling a mid arm, but would still have a top end machine to use with my 820, or at least that was my way of processing the decision.