Think of Power Finish as a step 2 & 3 combined into one bottle. It's a good diminishing polish that will (on a vast majority of paints) polish away most imperfections left by a coumpounding step and also finish down very nicely (LSP ready in most cases.) Be aware that not everyone will recommend the same process/ products. Much of detailing is personal preference, but rest assured that in the end both Ken and Phil accomplish the same goal in their details- PERFECTION. You will receive sound advice from both. GOOD LUCK!