I literally haven't had a rotary cutter problem because of the rotary cutter. I did once put in the blade wrong for one of the brands.
Yes, many of my friends absolutely love the Martelli ergomatic rotary cutter. I can't use it as effectively because the arthritis is in my fingers. Darn.
The Ginghers are too weighty for me to use. So, I stick with my Fiskars and the squeeze of type of Olfa cutters
I guess it is which one fits and works well with you.
ali.