I purchased the Janome 9mm High Performance Presser Foot Set. So far I have experimented with them to see how they function and don't have anything critical to report. They do seem to move easily over the fabric without having to adjust the presser foot pressure, which I thought might be an issue. The main reason I bought the set was for the open toe decorative stitch foot, which I wish I could have gotten separately, with the hope that it will assist me when I want to use decorative stitches on quilt projects, but have yet to do a 'real' project. I have high hopes for these High Performance Presser Feet!