There are many different shades of yellow, some being darker and some lighter. Almost all shades look great with any product as long as you have done the proper prep work. I personally like UPP, EX-P, Optimum Spray Wax, Natty's, Signature, Paste Glaz, and Carnauba Moose as some of my favorites (sealants + waxes). Can't go wrong with any of them, but one of my favorites so far is UPP.