I just tried Meguiar's NXT Generation Tech Wax on a car that had bad faded paint that only a really good cut and polish and several hours would normally fix. This stuff is absolute magic, no hard rubbing, just wax on/wax off. And the paint came up like I had spent hours on it. It was around $50 for a bottle, so I paid for a miracle, but it went way beyond that. Its a synthetic polish, and works on everything except stone chips and crows feet. Highly recommended. I've never seen a polish like it.
Note, it didn't work as well on powdercoating, but paint was fine. I'm going to give it a go on my Skyline and see if its as good as Meguiars Wet Look wax, which is the best till now.