Re: Is there a superior alternative to Klasse SG ???
Durability (length of protection) is very subjective on the end user, environment, and prep before LSP. Level of protection has never been fully developed or tested IMO and most sealants preform amirably as do waxes but each with their own unique traits.
For longevity the Klasse Twins, Zaino, and Collonite are often given alot of support from their users. Since most of us never get to the "fall off" point of any wax or sealant its a toss up, as usually a new bottle of this or that shows up or on the shelve and we are drawn to it far before the demise of the previous coating.