Meguiar's Ultimate Compound
I had some crazy swirl marks in my paint from where some dummy tried to use a buffer incorrectly before I bought the car. It looked like wax that had dried before wiping off, but they were indeed a bunch of scratches. Just used Meguiar's Ultimate Compound with an orbital and it took it all out! It's hard to wipe it all off, so I just went back over it with wax and it looks amazing now. Highly recommended.
2007 Monaco Blue E90 335i sport/premium
MHD flash, BMS DCI, Evolution Racewerks CP w/ HKS SSQ4, Lux v6 AEs