Okay, I've finally got a chance to check out this forum & I'm seeing all of the testimonials for these 2 products, Zaino & Crystal Guard. I'm sure most of you have already seen this question put out here a million times, however being a newbee to this Detailing group, could someone tell me the difference between these to products, what's the advantages & or disadvantages of them, too? I appreciate all of you guys advise. Lastly, I'm going to have a clear bra installed the 1st of next month, should I wait till them to use either of these items or can you install the clear bra over these products?