(repeating myself from another thread with some more info):
I'm mystified by the reports of reticence in the higher frequencies of the LCD3 (at least my pair). They seem quite vibrant and basically totally balanced top to bottom (and have a wonderful deep bass).
I just listened last night for a few hours and thought they were totally musically engaging, with no part of the frequency spectrum standing out, great palbability, sweet and exciting and dynamic and fast all at once.
I guess I've been reading about this reticence in comparison to the the new LCD-XC (which I've never heard), but for me the 3 does it all.
I use Drew's Silver Dragon cable (balanced/Furutech XLRs)