I ve been using the the three stage 3M polishing compounds for years. They are great products and have always done a good job for me. I m currently working on a 65 Mustang fastback that was repainted back in the 80s. I ve wet sanded the paint and used the 3M three stage products on this car and have been amazed at the results! I never thought the paint would looks as good as it does! 3M tends to be more expensive than some of the other brands, but I think the extra money spent is well worth it.