I only own two rotary cutters...the first one was a KIA which I really liked but it wasn't very ergonomical (I think thats the correct term?) so I bought a Fiskars with the wide grip handle.... the screw does keep coming loose on it but I just give it a twist to tighten it now and then.... Next time I will try the Dritz.....let us know how you come out with your new experiment Ruth!