What is the best swirl/scratch remover you know of?

[Perfectlap]

p.s.
just a thought. ways to prevent swirling is to:

1-IMHO avoid using split end microfiber on your paint, stick with looped ends.
2-refrain from "over detailing" your car's paint.
3-don't wash the car without first rinsing it, I always lubricate the surface someho before cleaning.
4-don't use a wash sponge or mit more than a couple of times or make sure you have washed it several times before using it a second time.
5- Don't apply or remove waxes and polishes in circles
6- avoid drying the car with terry cloth (I like the absorber)
7- Clay often, waxing or polishing a surface with sediments still on the paint surface is just the worst thing you can do.
8- Use a dedicated buffing towel for final buffing and quick detailing.
9- The less you touch the paint the less it will swirl.