Black Limited, NXT is a good product because its easy to use and produces a GREAT shine, but it doesn't last that long and thats ok because its so easy to apply/remove. Its good for NO longer than a month. As far as how it compares to what I use, well, I use Klasse All in One and its "twin" Sealant Glaze. These products are acrylic and are even easier to use than NXT, believe it or not. You don't need to use Klasse AIO all the time and layering SG is the best way to go. This is the reason I have so many coats on my car right now, well I've clayed it 3x's this year, but you've gotta do that from time time. In closing for being an OTC product, NXT is fine and if your waxing once a week and don't mind it, go for it, nothing wrong with that because that finish on black must look GREAT.