Getting the color black to look great is dependent on so many different factors, such as:
1) OEM Factory paint with orange peel. (Prominent in domestic (USA) manufacturers)
2) Softness (Like Subarus or early jet black BMWs) or hardness (like Mercedes) of the OEM paint
3) Shades of black or metal-flake blacks (Like Ford`s Shadow Black)
4) Re-sprays from repairs or complete repaints
I am sure few pro detailers suggest or recommend wet-sanding out (removing) ALL the orange peel on OEM paints and compromising the clear coat life (let along new vehicle factory warranty) to achieve that "perfect" finish. Yet, this is WHY high-end OEM cars look that much "better" than "less-expensive" vehicles because such a process takes place in the manufacturer`s production line (like Jaguars, BMWs, Mercedes-Benzs, Bentleys), which is a reason behind the higher retail price. Should you as an individual choose to do so or have someone else so it for you, you must consider this risk/reward factor.
That said, I think EVERYONE agrees that getting Black to look "perfect" is a time-consuming process that requires proper:
1) Assessment of the paint-type surface (see above)
2) Application of compounds and polishes with the proper machine and pads
3) Experience in how to do this.
It`s not so much the LSP on a vehicle as it is in the prep work BEFORE the LSP application. When you see a custom-painted black vehicle that has been properly prepped (IE, wet-sanded and "buffed" multiple coats of paint/clear coat ) you begin to understand WHY your OEM will not (nor cannot) look as good. Can you get close? Yes, to 90% of the non-Autopian people who see a "shiny black" vehicle. But to those of us who know what to look for in a perfect black paint, "perfect" is hard to achieve and only a few Autopian can really do so because of their expertise and equipment, not to mention the time they take in doing so.
I am not here to bust your bubble, BUT, the prep work involved in a "perfect" black paint is key, probably more so than the LSP. Now, from this thread discussion, it`s obvious that some LSPs are much "better" that others on black. Your choice of Pinnacle Souveran Paste Wax is excellent. There are a host of black-specific waxes out there now (like Blackfire`s Black ICE or the new Dodo Juice`s Black Widow).
What ever route you choose, let us know. We can all learn on how to make black look its best