Hi TWO
The DAS6 is a dual action polisher, meaning that it has 2 planes of motion. This makes it much safer than a rotary...especially over panel edges. The most damage you can do really is to drop the machine on the car. It's what I first started out with
Its a perfectly adequate machine, it will just take longer to cut into the paint. The rotary creates more heat and as a result it can correct paint quicker. The downside is it's much easier to burn the paint.
My reference to not enough cut was in reference to the level of correction (swirls/scratches ) . Always start on the least level of cut possible and work your way up until you're happy. In my case that was a finishing pad plus medium Polish. Then to the finishing pad and medium Polish. The next level would have been a light cutting pad plus finishing polish. Then medium Polish etc.
Megs 101 and 102 polishes are what I first used. Always be conscious (in lieu of a paint thickness gauge) of the thickness of the paint. Generally a DA (like the DAS) will be safe on paint.
Oh and be sure to thoroughly clean and the clay the paint first. I forgot to mention I did that!
I'm by no means a pro, just an enthusiast by the way!