I love my 1/4 inch foot. My Mom had the Viking Ruby ..and just prior to pruchase discovered the 1/4 inch foot. I was curious if she would use it /or want it for the Ruby. She has been sewing/quilting for over 75 years, and could do a 1/4 inch really well without it. But she loves the guide bar and says she can so a bit faster and it more relaxing using the 1/4 inch foot with a guide. I too have a Viking and that little guide bar... is worth it. Do note Viking has several versions of the 1/4 inch foot. One has a single hole in the foot w/guide bar , another has a more open needle area so you can move the needle for different widths, and another is a 1/4 inch foot with no guide bar( not a fan of that foot).