Nice comparison. I've heard nothing but stellar comments regarding the LCD-2's bass.
Pardon my lack of knowledge, but is the Rev 2 model the one currently on their website with the new(er) headband? Absolutely beautiful.
This one: http://audeze.com/audeze-lcd2-bamboo






























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, it's because anything heavy aggravates a lower back- spinal issue. Funnily enough, my neck isn't affected- just the lower back big time 

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.