I also have the Rupes 15mm Mark II, and I'm obsessed. Simple as that. The weight, grip, the speed in which it corrects with Adam's pad's and polishes is impressive if you know what your'e doing. That being said, if you're only going to be using this as a light hobby, i'd without a doubt seriously consider the Swirl Killer. 5-6 times tops a year will net you great results from the Swirl Killer. If its something that turns almost into a side job (like me), then a Rupes Mark II is king. You also have to consider buying the correct polishes and pads for the job. Each vehicle will require something different. Adams doesn't sell crap, so the Swirl Killer and the new Mini are going to be great options to get your foot in the door, and to do what we love to do, detail.