Ive never use the Wolfgang sealant, but another site ran a huge wax and sealant test and it was one of the only remaining 5 at the end of the test, along with 3 Zaino products and something else I forget. They also noticed that all of the 'polycharged' products ( which blackfire has ) seemed to die about half way through the test. They didnt specifically test blackfire sealant though.
Ive used Blackfire for a year on my DD and while it left a super slick finish, its shine diminished rather quickly and the beading went south if I didnt use its booster spray.
Based on this, I would say that Wolfgang is likely the more durable of the two. But blackfire is incredibly slick, and shines almost like a carnuba when its fresh. If you dont mind applying it every 2-3 months, Im sure it will suit your needs. Its an absolute dream to work with, easy on and off, can be applied to glass and plastic, does not stain trim.
