By the negative reviews of the comparatively very low rotary cutter, I have decided for this model from Prym. I need the rotary cutter for all kinds of fabrics. The aptitude test, in which the rotary cutter had cut through 2 layers of denim, he passed with flying colors. I thought it was almost scary how easily the blade went through the fabric. Thanks to a backup that you push on the handle easily with the thumb on the blade, the rotary cutter is a safe tool. You just have to be very careful and really press the backup after each drop. Then anything can happen. He makes a very strong impression. No wobbling or even loosening of individual parts. I can recommend the rotary cutter at any hobby seamstress!