Personally, i don't find the Empy too dark. I'm fine with it's tonality (took a short period of brain burn in coming from Susvara) and it's a very comforting, pleasing one.
I no longer like the sound of the LCD-4 when not equalized and almost sold them because of that. I suppose I could use more time for brain burn in, but coming from Susvara, the LCD-4 seems too colored for my current tastes (I have had the LCD-4 far longer than I've had Susvara and it was my TOTL HP for quite awhile). I use Oratory's EQ with the LCD-4 and because it has an almost -9 db level compensation, it makes power requirements almost up there with Susvara, which again, is not a problem for me. Also, the ergonomics of the LCD-4 (esp. weight, comfort) are also a substantial factor for many people so I can easily understand why many would not make that tradeoff for an Empy.