OK, now I see it. I think I was looking at the first picture and thought the harp space was smaller. With the foot control there, it does look smaller, and then I look at the second one and I can see just how big the harp space is. Is the harp space in the Singer 15 larger than the 66, or is there a difference? Which Singer has the largest harp space, do you know? I'm wondering just in case I want to machine quilt and want the largest space to do it in.