[Perfectlap]

Klasse has the best polish on the market (ALL IN ONE)

After that you would need a good seaslant.
there are many good ones now. KLasses has some competition.
Acrylic Jett and Poorboys EX with Carnauba are very popular for black.
Right now I'm using FK's FX 1000 (very little elbow grease required just give it a couple of hour to cure before you add a topper or 426).

425 is not a polish its a final gloss that acts as a dust repellent because it leaves a very very slippery finish to your paint. Its a must have you use a Carnauba glaze like S100. Those Carnauba toppers tend to attract allot of dust.
FK also makes a dust repelling wax topper called pink wax.