I prefer them over my HD800's in most of my set-ups (although granted, I never use the HD800's in my portable rig) and I love the HD800 overall. But going through several tube setups with the Lyr, they were top dogs in more than one example. Granted, different signatures and all, but still impressive. They absolutely murdered my other headphones (Denon AHD2000, DT660 even for classical and lesser so, the Audio Technica AD2000x). Likewise, they blew away every single "portable" headphone I have ever tried (UE6000, Momentum, K550 -they seem to have the flat AKG house sound to me and I didn't care for the fit-). And EVERY Grado I've heard (I've sampled most of the higher end ones).
I can't comment on the LCD2 or 3 because I haven't heard them, but I know one area the Mad Dogs blow them up is comfort. They blow quite a few headphones up in that regard. I was giving the LCD2 a long look before, now not so much.
No hyperbole, just honest impression. I was prepared to toss them on the shelf if they weren't up to snuff. They are easily $1000 cans to me. I am legitimately surprised how well they handle classical music.
Also, HD650 is $500 new. MD is $300 new.
And since this is a personal journey, I can't say you are wrong and am happy you like them so much. Anecdotally, I'd say you are in the minority in thinking that they are worth $1000,so I just posted to balance it out for people who are newer to the hobby and haven't tried out a lot of headphones. They are definitely good and are a good value.
I disagree quite a bit about classical, as the HD800s are magnitudes better for me, but to each his own.