Well the LCD2's have more meat and texture on the lows, the HD800's bass is of better quality, it is more round, smooth and natural sounding. What I was actually saying not really too, is comparing the bass to Stax earspeakers. Sure a bigger drop but the the coherency and fastly rendered bass of the Stax stat's is imo "beast".
Looking back, MAD Ear+HD and Meier Concerto for amps (heard them on a 3 channel B22 a few times) and my DAC was the PS Audio DLIII playing mostly CDs through my CDP. I wholly expected to hate the LCD-2s when I ordered them as some made comparisons between the two. But I was enthralled by the Audeze naturalness and bass like no other. There was no mid-bass hump that was cumbersome and while pushed back, the treble was very well extended.
So not exactly low nor mid-fi that's pretty high end for it's time back then. Guess the HD650's sound is just not for you.
Awesome quote, going in my sig :)