This is the produce I used. 2.5 years and no issues or chips. I would never use a "bra" on any of my cars. I had one on my 82 Audi GT Quattro and it destroyed the paint, oh and it was a fitted bra and was very tightly fitted, stained the paint after just a week or two on the car.
http://www.youtube.com/watch?v=x7_iL...layer_embedded
http://armorcoatusa.com/
I have some pics in my gallery of the install and a front pic after the install.