Here is 60% Huber on an E60 M5 Entire windshield.
And 50% on the rest of the M5:
I will look into the 77% you are talking about. Thanks Dan for all your info on tinting. Is there a way that they can go all the way up to the windows edge on roll up windows, and make it so if you rub your finger it wont pull the tint off?