I purchased this product to use in conjunction with the new Boss RC3 Loop Station. The new functionality, where you can move back and forth through loops fairly quickly and easily using the A button (momentarily to move forward, and held down to move backwards through loops), is excellent compared to what I was used to using the FS5U and RC2. The reduced dimensions are excellent, and alongside the ability to power the footswitch via a standard Boss power supply (whereas the FS5U requires batteries), makes this product much more suitable for use in a fixed pedalboard.