I've seen here:
that the hdvd is displayed with a lot of hd650, now question is, any of you has tried these together, or with the hd600? Do you think it's a good ("cheap") alternative to the hd800? Otherwise, what other headphones do you suggest?
I am not, by a long shot, a technical expert in this field. But for what it's worth - I have lived with my HD650 for around 8 years and have always been happy with them. The last year I have made two upgrades in my headphone gear:
1. Bought a new amp, Sennheiser HDVD800 -> a huge step up in sound quality
2. Bought a new balanced (Q Silk) cable to my HD650 -> another solid improvement to the overall sound quality
All in all I am a happy camper with what I have now. Next up is probably to try the HD800 in this set-up, but they are too darn expensive for the moment where I live (Sweden). You used to be able to find them for a good price but since a year back you can not find them any cheaper at any dealer...