Glory, yes personally, I find PD to be a significant upgrade over Berkeley. The biggest improvement is in the lower frequency where I feel Berkeley is a bit sluggish, as it has big,fat bass but a tad slow and a bit less well define. PD improves significantly on that. Midrange on PD is a bit more forward but overall, on most part, I think PD improves upon Berkeley in just about everyway, not always a huge different but I did not find PD lacking in anything in comparison to Berkeley. Whether the improvement is worht $10,000 or not, I am not sure but I also gain SACD capability and an excellent transport as well.