I've had pretty good results with that wax, too, but Meguiars #21 Synthetic Sealant will give you longer lasting results.

 

For the price, quality, and length of time it lasts...you just can't beat Zaino. There are lots of really high end carnauba wax products, but I could never justify their cost.

Concerning $1500 wax, for that kind of price...

...I'd rather pay a group of strippers to clean my car and take their sweet time, slowly massaging the dirt off my car with their naughty filthy bodies, slowly waxing and buffing it to perfection.

 

1.Wash, 2.Meguiars Paint cleaner, 3.Zymol polish, finally 4. Meguiars High Tech Yellow Wax.
Before a good wax, I heard/read its good to use dishsoap to strip all the old wax off.

The results:

Check out how the paint reflects just like the windsheild in this pic

 

Looks like some good stuff.