Meguiar's : DA Power System I saw this at Walmart yesterday and I got it on a whim. The plan was to buff out some minor swirl marks in my paint but..... .......To say I am disappointed would be a real understatement. I saw a lot of reviews saying that it was a great product but I have to disagree. I used a yellow polishing pad and Meguiars Ultimate polish and I could not see or feel the slightest difference in my paint after I used it. I even tried some old Menzerna Final Polish II and the results were the same. I used it with a Ryobi 18V cordless drill & a lithium battery. Before you dismiss this drill let me tell you - I have drilled (large) holes in a tree trunk with this drill. I have drilled holes in a steel post with this drill so it's not completely worthless. Maybe I would[/I] have gotten better results with a high amperage corded drill but I don't have one and I'm not gonna go buy one just to see. I suppose I could have tried the red pads & Ultimate compound but I think at this point I'll just take it back to the store & get my money back.