I'm trying to decide on products for my cars and work van. I have a black 2010 Altima, 2009 blue RDX and red work vans. I will use a PC da polisher. I have Meguiars and Chemical Guys Hex pads. I will be using Blackfire as the lsp. My question is about the polishing. I narrowed it down to Menzerna pf2500 and sf4500 or 3d hd cut and polish. I am looking for the best finish with out causing any damage. Thanks guys