As for abrasives, 3M is the best. However, poor masters often can't get rid of the ring marks left by polishing. Meguiar's won't leave a ring mark. But if a car made by a poor master is washed 1-2 times, there will be ring marks.

On handmade wax, the tortoise brand is the brightest, and the 3M brand is the most durable.

SONAX, the effect is not bad, but the price is also high.

Carpro, never used, no comment.