At the time that the 303/300 came out, and shortly thereafter, there was a lot of conversation comparing that unit to the older 306/200, since the latter's used price was in the ballpark or slightly less than the formers new price. I think if you search the discussions on audiogon and also at www.audioasylum.com you'll find comparisons. My memory is that most but not all preferred the 303/300. BTW I researched this a lot and ended up deciding to get a used 308T and I love it. It has a real tubed output state and it the most natural sound of any cd player I've ever heard. It is not the most detailed, and, I've never heard the newest top of the line like 306 SACD.
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