Hey Rod, Welcome! Yes I can tell you guys first hand, swirl killer 15 and mini 12 are the way to go. I am new to the process and started with a cheap harbor freight setup, as I thought I wouldn't need the more expensive polisher since Im just a weekend warrior. Let me tell you how wrong I was... not only does the swirl killers do a better job with less time and effort, the amount of fatigue to my arms was CONSIDERABLY less with the swirl killers. You will get done quicker, the finished result will look better, and you will be WAY less tired when you get done! You could get by with the SK 15mm alone if you absolutely had to, but the mini helps a lot with the curves of my car and smaller areas so for me having the mini also ended up being a must.... Good luck, hope this helps!