I used it last week. I broke the pad in on the windows first prior to using it on the paint. It was an SUV that I was doing so by the time I was finished with the windows...I safely assumed that the pad was well "Broken-in".
I wasn't sure which speed setting the DA should be on and I don't want to add anymore defects to the paint so I settled on 2. I made sure the all sections as well as the pad were well lube during the entire process. No pressure was applied to the DA. I went ahead and did the entire car.
At completion, I didn't see any marring on the car. I went back and clay a panel and did a 50/50 comparison. The Nanoskin side didn't feel as smooth as the side that was done with clay. I think the speed setting was set too low so I tried speed 3 and the result was much closer to clay.
I honestly didn't experience the level of time saving so many people are claiming....maybe 10-15 minutes at the most. I will still continue to use it because I simply was not as tired as I would normally be at the conclusion of the detail. This in itself justify the use.IMO