for vag paint menzerna polishes will give you very good results, 3m polishes are excellent but if you are using them on just your own car then the big bottles will go out of date before you have chance to use them so consider that when buying 3m.
or have a look at the wolf polishes chris(waxamomo) has just started stocking, also get yourself some ipa for wiping down after the polishing stage then use a good machine glaze to deepen the gloss and depth of the finish.
get good quality pads aswell as cheap ones will fall apart very quickly and wont give you a nice finish either.
Dan