Does Gtechniq C1 with EXOv2 offer any marring protection like opti-coat? I just finished using Opti-coat 2.0 on another car but have a bottle of c1 and exov2 that I haven't opened yet. Was thinking to try that or buy gloss-coat. I need to coat a white audi and a white bmw. I do like the beading properties of the gtechniq products from youtube videos. Not many videos on gloss-coat.