Ask 10 guys and you'll get 10 different answers.
I've tried ceramics of different flavors, and I can't say that I liked any of them.
My go to is Collinte 845 "Insulator Wax" topped with P&S "Bead Maker". For detailing spray, I use P&S "Paint Gloss" detailing spray.
For the bumpers, I use Collinite 850 "Metal Wax" (none better and I've tried a bunch)
Product links below:
Amazon.com
Amazon.com
Amazon.com
The paint on my 300L isn't the greatest, but I got some shine with those products.
Obligatory clouds in the hood pic.