David, thank you very much for the fantastic review. I agree with you on so many points. I wish you had included DT990 too, especially the Pro version which can be bought for well under $200 as I think they sound better than DT880. DT990 are more detailed and dynamic than DT880 with similar midrange tonality, while the lows and highs can easily be EQ'ed to one's liking if one find the emphasis excessive IMO. I personally found DT880s somewhat sterile, a little closed in and boring sounding, but to each their own of course. I completely agree with you about HE-500's phenomenal sound for the price and most of what you wrote about HD650, although I am not sure about the lack of treble on HD650s. Can't the highs on HD650s be brought out through EQ'ing, considering that their quality is very good?