I purchased this when I stayed in NYC this September @ Apple Store Soho.
Price was $299.95 + tax and the reason why I bought this is just because it's a huge bargain price compare to buy it in Japan (depends on currency exchange rate, but nearly the double you have to pay in Japan).
I like the sound with enhanced bass - mid range focused, but found the bottom is bit unstable and need stable (flat) place to install.
According to the official site, I found following 3 features;
1. This one can process iPod data digitally.
2. Flowport @ rear side can produce emphasized bass sound despite the size of speaker like so small.
3. Can use this one as the external speaker for PC/Mac via USB cable.
External DC adapter and equipped with remote control unit.
The great trial subscription offer of society of sound that B&W provide for registered owner for 3 months (no, it's actually 2 months), you can download unlimited high resolution music data (mainly classic, London Symphonic Orchestra is a popular one).
As I found not much interested music data they provided, I didn't renew the subscription, but I admit £33.95 for a year subscription fee could be a huge bargain for a certain users.