I only used it twice. what I like about black light is that it cleanse the paint, hides minor swirls, and adds some protection, also added wetness and gloss.
Dodo supernatural brightens the paint and has very tight beads. Its my favorite wax, but you have to apply very thin.
Cquartz so far is holding up very nicely after 4 months ( my car sits outside 24/7). only downfall it has is that it doesn't prevent water spots..