I have two Pfaffs (computerized 7530, mechanical Select 3.0) and a Baby Lock Quest Plus. I think the dual feed on the Quest Plus is identical. LOVE that feature!!! My piecing is SO much more accurate. Putting on sashing and long borders is also easier, with no wavy-ness. On my QP, I did straight-line quilting with thinner batting with just the built-in dual feed. No ripples or puckers, but these were smaller pieces, well-basted. I must say that for thicker layers, the walking foot on my Bernina is better. It's a cinch to put on, has 1/4" markings, and has 3 sole options including a new sole for SITD. The new Bernina 8-series also have built-in dual feed, which I think is better than on the Pfaffs. Baby Lock has replaced the Quest Plus with the Serenade. The Pfaff Smarter C1100 Pro is also very similar to those two Baby Locks. All with 9" harps, for about $1000-1500.