I also like the foot that floats over the quilt sandwich. I have two machines I use for FMQ. One has a foot with a spring. The other is stationary. Both have that half circle opening so I can see where I am going with my stitching. The edges of that half circle is 1/4 inch so that is really great and easy to direct for stitching 1/4 inch from seam lines. I like it for stitching in the ditch as well.