Holly smoke no wonder the discussion board is overloaded, that's a heck of a steal! They'll sell this poppy like crazy. I would have pounced on this deal if it wasn't the fact that I already own the HD600. If you always wanted to go for a n HD6XX, now it's the time. Those phones are the only pair I refuse to part they are that good.
yea, we'll see, there's a couple of days till the floodgates open. For the price, you can't really lose anyway. I figure I could sell or give one away or something if they're that close :)
I had both HD600 and HD650 few times. HD600 is slightly more neutral and flat. HD650 is slightly more refined (detailed) but differences are small. I sold my headphones and got myself some studio monitor speakers and love it but this deal at this price I might have to get HD6xx.