I have and have used the Viking walking foot. And I am so glad I have it. My oldest one has lasted about 40 years. I also bought another one for my newer machine. I also have two Walking feet for my Bernina's. Again, no problems with them and they are essential in my opinion. They work well for feeding fabric evenly I use mine for applying binding to a quilt and also even for stitching long seams. If you can, I would recommend getting the viking one. Just make sure you get the right one.