the turtle wax polishing compound is the equivelent to 2500+ grit, the reason why i reccommended it is because it is a very non-aggressive compound, and therefore takes alot of time to polish out, but the good thing is that there is virtually no chance of burning thru the paint, and with really thin coats it is perfect, but like i mentioned about 20 pages ago i would spend about 1 hour to just do the trunk lid, just sit there and let the polisher do the work. you can't expect instant results, if on the otherhand you know how to polish and rub paint out then use whatever you want, just be careful on fresh paint. the turtle wax stuff is really good from my expirence and i did all my cars with it, just takes time. polishing is a art in it'self, for the layman the turtle wax stuff is the way to go.