What is the difference between the newer Bose 3-2-1 GS Series III as compared to their previous version, the Series II. The Series III is available for $999 online (I can't find anyone selling it cheaper). And the Series II is available for a variety or prices, from $699 to $999. Does anyone know what the difference is between the two series (aside from the prices). They both have the 2 speaker system. Does the Series III offer better quality? More power? More features?