I've found the best wax that's clearly superior to all others... troll
troll... lol

Now, I'd like to find the best car wash solution.  It seems that all
the ones I've tried leave a thin film on the surface when I'm done
washing the car (suppose they call that the 'wax' in the car wash).
Does anyone else have experience with gentle car wash solutions that
don't harm the wax but don't leave the crappy film?  TIA