I broke one of my old trusty panel cutters installing a wrong panel door. So of course I immediately looked for a replacement. I chose Yonico because I've had good luck with their CNC bits and I wasn't disappointed. Unlike my old bit set, Yonico has an undercutter, eliminating extra setup and a source of error. Setup was easy and intuitive. I now have two sets of Yonico Raised Panels, an Ogee and a Quarter Circle.