The lambo is pretty close, the Audi is WAY OFF. Brilliant white is a beautiful color, very very unique and definately provides a different look than regular AW. The guys that own one will be here shortly to tell you so. Was my second choice and it was a very, very difficult decision to not go with it.
BTW, there's quite a few pics of BW E92's on the forum, go to SEARCH and you'll find them. The pics are fairly representative of the color but you have to actually see it in person to appreciate it.