I have a DAS Pro.
I bought it after attending the Auto Finesse demo day at Williams. Excellent day with hands on instruction and advice.
The dual action means it is safer than pure rotary as the pad stops so polishing stops. I have Auto Finesse polishes that are designed to stop polishing after a while for extra safety. I also have Meguiars.
Curved bodywork needs care. I have smaller pads to help.
For a veritable massive amount of info try
www.detailingworld .co.uk
Oops....need to add that there are very good videos in there on “how to”.