Based on my experience the Swiss company Swizoel produces the best car care products money can buy. Apart from being expensive I have not yet experienced any disadvantages attached to these products.
All products are based on natural ingrediences only. The wax contains about 30%-40% of Carnuba (not sure about the spelling) wax which is expensive but highly effective.
The two key products are CleanerFluid which should be applied before the first use of the wax. In contrast to many other products of that kind CleanerFluid can also be applied to new coatings.
The second key product is one of their waxes which is applied after the treatment with CleanerFluid. Personally, I am using the "911" wax.
The result is really astonishing. The wax seems to protect the car for several months. Dirt can easily be removed with not much more than water. In addition, these products feature a wonderful smell...
Highly recommended
P.S.: Sorry RC, now we have the first thread on car care products on this forum