Ive mopped loads of cars now, pink back to red, smokey grey back to deep black, a mates terrano he washed using a sponge he found in his kitchen sink, which turned out to be a pan scrubber, so you can imagine what that did. Its really easy and those on the net seem to make a big deal out of it for some reason, you get better at getting the good results quicker rather than get better results.
Autoglyms good for a quicky but the mezenas the best when your using the machine, and I just love chemical guys jetseal because its so easy to apply and remove.