I agree with you regarding the LCD-1. The frame seems to be unable to fit properly on my head as well. I think it may have had to do with the weight of the drivers/cups?
I was listening to blessingx's rig and actually liked the CD3000 more out of his Extreme Platinum vs. the HD800. The bass had more weight, but the HD800 had better soundstage. Having a skinny/boney head didn't help with getting seal on the HD800 as well since there aren't really 'pads' in the traditional sense on the HD800. That might have affected my listening experience.