Need an Ergonomics Rating?! For an orbital sander?! Are you kidding me? My hands hurt from grinders, I just need them. I've tried this, and I'm new to orbiters, but this thing would slow and stop with very little pressure, even at high speed, and I had a LOT more work to do. Then the anther fell off and kept falling off. This didn't make me a fan. sent back. I think the price tells you what you get. sent back.