I've recently heard them both side by side. I like the lcd3, but I think that even though they both have a very similar sound and keep the audeze sound signature, the differences are sufficient to create fans for both of them. (Instead of getting lcd3, i got HD800 and have both lcd2 and hd800)
I, for one, do not think the difference is worth the price, but I am sure many will think otherwise.
Edited by dan.gheorghe - 5/3/13 at 4:22am