I've used Zymol. Spent $95 and kinda felt suckered afterwards.
It took hours to clean, buff, and remove. And the shine was not that
impressive, especially considering the massive effort.
So I tried MacGuire's Gold (which I had seen recommended but went with
Zymol anyway), Zymol is expensive, it has to be goog, right?
Well, the MacGuire's Gold came out better, took less time, and less effort.
After reading some tweaker auto detail sites, with guys who show cars, I
learned that they apply carnuba wax on top of the polymer waxes for a
killer shine.
So I now do the same, wax with MacGuire's Gold, then apply the Zymol carnuba
wax on top the next morning.
Also, carnuba wax evaporates in a few weeks, where the synthetic waxes can
last for months.
Try the MacGuire's Gold on a small area and see what you think (it runs about $12).