I had posted a request to buy one of these on the board and several folks wrote to say they hated them. Someone said to post my opinion after the class I took on using these.
Well, I don't have quilt top to show you, but I do have over 40 7" blocks made. I loved using it. It took a couple of blocks to find my groove, but once I did it was the best. I had never even contemplated doing a quilt with circular seams. As someone who has sewn clothes I know what a pain easing this kind of shape can be. But with this foot the whole process just zipped along. Of the 40 I have made so far only about three had errors that I had to take out and redo.