Thanks. To my tone deaf ears the sound system is fantastic, great sound without being tainted by too much bass (like I had with the ridiculous sub in my polo). I wasn't prepared to compromise on the options and luckily for me there was a car allocated to SMG that was in the last stage of the BMW production process where changes could still be made so I got what I wanted with the minimum amount of lead time. In fact the car arrived several weeks early and had to sit at the dealership until I could get it licensed as a 2013 model (another thing I wasn't willing to compromise on)
I occasionally wish I'd chosen M Sport, but overall I am totally satisfied what I got.