I just like them. I have 24 and would buy another one tomorrow if I found one that I thought was interesting. I keep a featherweight set up in my sewing room, I use one treadle mostly for piecing, I use a 15-91 for FMQing, several others are set up with different thread colors. One is for buttonholes, one is set up for a blanket stitch. I also have one featherweight in my car that goes to guild with me.