Well, I ended up getting both the 45mm and 60mm with a few replacement blades from Amazon. The prices there are better than on the website, especially when you have Prime and don't have to pay shipping. I am currently in the middle of piecing a quilt so will probably never get to some serious trying-out of the Martelli cutters for awhile. I'm pretty sure that, if I can get used to them, they will be easier on my hand/wrist/thumb.