I have both and I think they are very similar. I find the Empyreans more comfortable because of the ability to twist the cups though they do fall off more easily. They sound more muffled and the bass is fatiguing after a while and a little exaggerated. I don't find any of the faults in the Utopias that many people talk about but I think that's mainly because I pair them with tubes. I've been switching back and forth for a few weeks now between the 2. I've been building speakers and subwoofers for a couple of decades now and just starting to get in to headphones. I have a LG FP14,000 Watt clone amp powering my dual 18" subs so I am used to bass. My comment wasn't meant in a negative way. It's the adjusting that's messed up just what I do when I swap them back and forth.