it is good stuff and i like it but i'm not a propper bufty.

proper anal buftys will be going for dodo juice as a bare min i would have thought and be getting million times better results than me. mind they;d also be using machines too!

imo it depends what you want. if you just want something to keep ontop of the light swirl marks and protect it but not spend a fortune on uber good stuff then get the megs and possibly put 4 or 5 coats of wax on to help it last a little longer and use quick detailer (that wont strip it off) after you wash the car. if you want to go full paint correction and mirror perfect finish then your gonna be forking out for some equipment and dearer cutting compounds and polishes.

detailing world may be a better place to look for opinions on the mgs stuff though as a few may have tested it against other stuff.