Wow. I have been using cheap (disposable) Chinese grinders for many years. Eventually shook it off and bought this based on a YouTube comparison to Snap On and Aircat. Yes, the shutter gets the highest marks, but this one comes in second. After intensive use I can only say one thing today. Take it. So beautiful, smooth, quiet and powerful. I had no idea a grinder could be so different from the cheap ones. It's like a different instrument!