hahaha martin, good one!
Excellent review dukeskd. Hit the points quite clearly. I keep trying to negate the positives of the HD800s I have on loan, since I do not want to spend 3x the $$ to get them over my HD650s. Of course, when you start listening to intimate music settings that are typical of a lot of jazz recordings, it's tough to not fall into the sheer enjoyment of this.
They are WAY more comfortable than the T1s (which gives me irritation from the head clamping force) and slightly more comfortable than the HD650s. They just feel like they're about to eat my head up, with the huge padding over the ears.
I agree with you, I for some reason never found the Beyerdynamic headphones comfortable for long periods for some reason, maybe its my head. However, I do feel that the HD650 are very different from the HD800, its surprising they're in the same headphone range to be honest. But is it worth 3x? You must decide that in the end.