Zaino is what I use as well... Z2 or Z5 with ZFX provides a Long Lasting Shine!

However I've had a problem using their Grand Finale Spray Seal. It could be my application of the product but I've tried several methods and usually get a haze that must be removed with the Gloss Enhancer, so I've steered away from it.

I use AutoGlym to clean the Engine compartment, and the Sonus "Trim and Motor" Kote to enhance the rubber, (not plastic) which gives a new car waxy look in the engine area.

To enhance the trim and rubber I use first use Mequiars Exterior Trim Detailer Spray to clean the surface then I use Sonus "Total Eclipse" to give a nice beautiful shine.

For my tires I use Mequiars High Gloss Gel, which really gives a long lasting moderate shine (and smells like grapes).

As you can see, I've collected a few different products that I like from different vendors; as I'm sure you will too! The trick is to find the right combination that you feel comfortable with, and go with it.

Just my 2 Cents worth!

Good Luck,
XFH