From a durability AND optics standpoint. What do you think. I am about to make a purchase and want to know what will give me better protection through the winter while still having that reflective, glassy/glossy look. Since Zaino is coming out with some new products, I decided to wait for them and buy JW, but if they won't be here for a while, I am considering Zaino. The Zaino will run me about $80 (Z2, Z5, Z6, Z8, ZFX), whereas the JW (Prime, AJT) will run me about $40-50. Thanks. Also, is it better to go with Prime Strong than Prime? Car is silver.