The RainX beam blades are on sale 2 for 1 after MIR at Pep Boys and CR likes them, so I am going to try a pair. The A4 is just a weird egg. The driver side has the airfoil which is fully functional and needed at 90+MPH and maybe lower.

And the passenger blade is curved to hug the windshield, so hopefully they stay on the windshield.