I got a Martelli last year and really like it. I felt my shoulder had less tension in it after lots of cutting. Downside for me: when I bought it at the NW Quilt Expo, the salesman in the booth said any replacement blades would work. I had a package of Olfa replacement blades at home, but when I put one in the Martelli, the Olfa blade hole is larger than the Martelli. This means that when I use the Martelli with the Olfa blade to cut, it doesn't roll smoothly. (Does that make sense?) Instead of buying Martelli replacement blades, I went back to using my Olfa cutter. I'll use it until I run out of blades and then will most likely buy Martelli replacements so I can go back to using that cutter.