Which products from those manufacturers are you inquiring about specifically? In the past I have used P21S paint cleansing lotion-which I liked very much as it removed water spots with ease. I'm not sure if it has any abrasives in it so I don't know it if would work for removing minor swirls like some paint cleaners do. I've also used their concours carnauba wax and found that it was okay, went on easy and buffed off easy but wasn't terribly durable. Zymol waxes are more of a boutique wax in my opinion. I'm referring to the ones you buy online, not the generic cleaner wax you buy at a retail store. With that being said, I found that they smelled nice and weren't very durable. Which isn't uncommon for a "pure" carnauba wax product. Then again, if the vehicle is parked in a garage the applied wax protection might last a little longer. Look around for posts by "The Critic", he is very knowledgable about detailing/detailing products.