No need for a complicated review, this stuff works.  I've tried the multi step sanding method with a drill on 6 family cars over the years and well yes that works too but its laborious.  That's why i switched to this and finished in record time.  I used a drill mounted polishing pad and completed this is record time.  Spray some clear coat sealer on top and done. If you find that this review was helpful please mark it as such.