I am lucky there is a automotive painting supply right around the corner from me, they have all the abralon pads @$2.50ea and every grit of wet sand paper you could imagine, and all the colors of scotchbrite, and they are much cheaper than anywhere else I have found. As far as what brands of polish and the like, that is about as varied as the bowling balls they are used on, I personally like Lane1 Secret Sauce, Valentino's Snake Oil, Storm's products, Brunswick's Rough Buff and Factory Polish, and 3M Finesse it. They all have small to large differences in how they work, and there are many others that I have not tried yet, so maybe some others can give you some more suggestions.
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Patrick