Since its release last year, the Bowers & Wilkins Zeppelin iPod speaker system (retail value $600) has been hailed as one of the very best iPod docks available. Not only does it come with a brace of state-of-the-art B&W stereo speakers and built-in subwoofer, it offers up to 100 watts of power, and it will accept almost every type of iPod and iPhone. And there's no need to compromise on sound quality with the Zeppelin, as B&W is also giving away 10…