For the price, the tool itself works very well. The bonnets are useless like every other reviewer said. You can however, buy hook and loop strips with a sticky backing and place them on the original backing plate and then use foam pads or wool pads that accept hook and loop. This works surprisingly good and is cheaper than buying a hook and loop backing plate that doesn't exist. ;)
The bad thing is it uses the bonnets which are horrible. Ended up manufacturing a bushing so I could adapt a velcro backing plate to it. It now serves it's purpose otherwise it was worthless.
Have only used once, but it does a good job.
I used it to wax my car and loved it