Only 3 days in to my new life as Minnie Driver, but loving every minute I spend in The BRG. From what people have said, I've no doubt that the HK system sounds great, but I was put off by the high price tag and decided to stick with the Visual Boost (6 speakers) which I'd heard at the dealer's and thought 'good enough'. I've no regrets whatsoever: sounds like a car stereo, but a pretty decent one, whatever music I put through it. As others have commented before, you do notice a big difference between different quality Audio files. Some of the standard MPEG files I've played have sounded very tinny, but anything in ACC sounds great to me (though I don't crank it up too loud: don't want to miss out on the glorious thrum of that engine!)