I have an old bottle of "Black Magic" sitting in my garage shelf. I purchased it back in '88 at Crappy Tire (or it could have been Wally Mart) when I had a black Vette. It was a marketing ploy by the product manufacturer for owners of black cars. The claim was that it was specifically designed to make black paint look the best it could ever be (yeah, right!). It was an OK product but it certainly wasn't any better than any other brand name car polish. The only "magic" in it was that it magically sucked a few bucks out of my wallet.
Then came "Eagle 1 WET". Same thing. Advertised to make any paint job look like wet paint. Again, it was OK, but no better than anything else out there. I used that on my black Viper.
I've been using Zaino the past 8 years. It's also very good but is certainly not worth the money or the effort to use it. I don't fall for the hype anymore. Once I use up my supply of Zaino, I'll get whatever Crappy Tire sells that is a known name and sounds easy to use. Anytime you wash and prep your car, then wax or polish it, it's going to end up looking spectacular ---- till the next time it gets dirty.