i'd use klasse AIO (all-in-one) polisher, followed by klasse sealant (a couple of coats of it) or poorboy sealant, and then wax.

 

following on what george from detailed image said...Nubas give a more depth and glow while sealants are shiny and mirror like...

Depends on how much you want to spend...

Swissvax/Zymol makes good high end waxes. but they are quite expensive
Zaino - A sealant - good durability and mirror like shine....usually need multiple layers for it to really shine
P21S 100% - One of my personal fav for best bang for buck wax
Pinnacle Souveran Paste - comes highly regarded especially for black cars
Nattys Blue - Like George said, great price and great look