I have had my LCD-4's for 2 months now and absolutely love them, they are by far my preferred headphone, in fact I prefer listening to them than speakers most of the time. They scale very well without being overly critical of sources. Easy to drive and I find them comfortable for hours on end. The Abyss has been sitting on the stand for weeks now with zero use. Using mine with DHC balanced cables and could't be happier. The only drawback is my wife loves them too so I have to keep an eye on them otherwise they get borrowed. Definitely more comfortable than my LCD-3F's or X's.