Review on Martelli Ergo Rotary Cutter Right by Hannah Curi

I'm only giving 5 stars because the cutter is great for an arthritic hand and I feel like I have to be honest. BUT the one I have is a newer model and this model _only_ accepts Martelli blades which have a smooth round center hole, not Olfa blades with a serrated center hole. Of course, Martelli blades are expensive and harder to find locally. This will NOT work with an Olfa blade. I feel like the company took advantage of their market by going to a proprietary blade. As soon as another brand of ergonomic knife comes along, and it eventually will, I will buy it. Five stars or not, Martelli leaves me feeling taken advantage of.