| You'll probably get more responses in the detailing product discussion section, but I'll add my .02...
I used to use the the 3M products, and really like them, but I was only getting about 4-6 weeks tops of protection out of the wax on my cars which are outside 24x7. Actually not bad compared to most of the other OTC waxes.
Recently I've switched over to Collinite 476s, and get *almost* three months out of it. Better, but still looking for something longer lasting... although I doubt I'll find it. Some people claim longer out of 476s, but I don't know how they do it.
HTH! |