I have owned 3 of these the first being the series 1 version and I personally think the best sounding out of the 3 series made. However the ease of connectivity with No's 2&3 plus the continuation of good sound quality & sleek styling make this a bargain item when bought (in good condition) as a used item. At the New purchase price of a sounddock there are equally as good sounding systems.
Sound quality is what its all about and unlike the series 1 the second series has an audio line in,which enables you to connect any device that has the earphone jack by simply purchasing for £3 dual jack lead.