Just curious, have you ever sewed with a true walking foot machine. They are very unique. You might want to watch some Youtube videos about them. I would not buy one without being able to go see one in person. Hubby has a different brand walking foot machine and it has two little feet that go up and down alternately. For the life of me, I cannot figure out where the 1/4" seam should go and it doesn't have any seam guide lines. The Sailrite appears to be much easier to line up.