Ah yes, the Zymol versus Souveran quest of knowledge. I too have treaded more than several of the vintage hand blended concoctions from Zymol in the past. Here is my take :
Zymol Concours --- a very nice looking wax, a car show winner. Simply easy to use but will make your hands dry and chauky feeling for days. It will set your pocket back over 150.00 large at discount.
Zymol NSX --- nothing special. Found it to be less than stellar compared to Paste Glaz. Harder to use, and nowhere near as good looking.
Zymol Titanium --- an average car wax with nice levels of gloss and wetness. Depth is not all that impressive. I would likely find Max Wax, Nattys Blue, or Sig Series II first.
Zymol Ital --- I currently have a tub of this recently reformulated wax. Pricing is ludicrious at 300.00 + but heck you just gotta know someone. Havent tried yet, but at this price it better take me home and put me to bed to dream about wet finishes and scar free paint.
Zymol Destiny --- a very strange creature. Not all that impressed. Got a very small sample a couple years back. At that point was not all that familar with finish prep, so using their paint cleaner and then hand application was unbearable. Would like to try again , if some falls off a truck !
Souveran Paste --- truly the absolute best carnauba paste offered at and exceeding its price point by more than double. It looks better than Concour, easier to use WOWO, and on any properly prepped car it is a show stopper. You can try to compete with it, you can try to compare with cheaper versions, and you can find better durability, but your not gonna be as impressed as you will when going the extra mile. (or cost)
And Max Wax is NOT Paste Glaz. Simple really .... Paste Glaz was NOT VOC compliant, and neither was Sig Series which was the upgrade with more polymers. Sig Series II would be its closest competitor. They both look great, as did Pinnacles Cycle Glaz, and it comes down to best pricing IMO.