The magnetic seam guide won't hurt your machine; the computers are set up like a regular pc. The 1/4 foot w/guide on the side is great (I have it on all of my machines) but check to make sure that when you sew it's still a 1/4 in. I have to adjust my needle. You might also want to check (even though more expensive) the new interchangeable walking foot that has many different feet for it. The one great feature about this new foot is that this walking foot can go forward/backward and many other things.