Barb sorry to have to answer your comment here, but my email to you bounced. I bought the Mega Quilter because a friend and employee of Ruth's Stitchery has one. I figured if I have a problem, I can just call Vivian! I didn't know it came in a different size, but if anything, I wish I had bought a 24" harp rather than the 18". More room = less time spent rolling up the quilt!