I’ve seen the commercials, I knew I had a couple project where this would come in handy, I debated and procrastinated for months. Finally I decided to buy one of these jigs, I decided on the R3 because the sound of $40 vs $100 was a better bet. Overall it’s a great little tool to have on hand. How ever there are certain things they don’t mention so I will. There screws are not as self tapping as they claim. A self tapping screw should bite and grab these one you need clamp your work piece or as you screw in it pushes and lift the piece you are attaching. Also when you are attaching two pieces together the side you have drilled the board will tend to pull in that direction. Overall I do like it and which you want depends on your needs.