I have 2 Vikings, a Featherweight, a Singer 15-91 and my favorites are my Babylock Quest Plus and an older Pfaff 1222e, because they both have the built in walking foot. I never have to fuss with the foot pressure, fabric thickness, etc. All the seams come out perfectly even and there are no tucks. All the feet on the Quest are snap on, so I don't have to change the shank.