I recently did some comparison testing of Blackfire2, Zaino, Platinum, and Klasse, both on my well prepped Jet Black BMW with 30+ coats of Zaino, and on another car with 27 y.o. neglected orange paint.
BF2 gives a “sparkle� equal to Zaino and Platinum, but has more depth and wet look. It can be successfully topped with carnauba. One drawback is that it leaves a little oily film on the surface. If this film is washed off then it looses most of the depth and wet look. If topped with carnauba it’s great!
Platinum UPP has great sparkle and lacks the depth and wet look of BF2, but has some depth and wet look. Very slight oily residue visible on the black paint, not visible on the orange paint - - maybe because of the color, maybe because the old non-clearcoated paint absorbed the oils. Also tops well with carnauba.
Zaino has sparkle equal to or maybe very slightly better than BF2 or PUPP, but lacks depth and wet look. Is very difficult to top with carnauba without getting smudges!
Both BF2 and PUPP gain a lot of depth and wet look when topped with Souverän!
Klasse HGSG is behind all the others in sparkle, and behind BF2 and PUPP in wet look and depth. Much harder to buff off than the others.
As with all of my posts, YMMV!