I'm very fortunate to have several sets of very good IEMs, yet I want the the OPUS, I want the Semper and I'll likely want whatever is going to be announced next. But I have come, to the conclusion that if for some reason I could only have one set of IEMS, it would be the EDPs that are in my ears right now. They've now got about 160hours on them and they are superb. They dont reach down as low as the RAHs or reach up to sparkle as high as my Fusions and M3s. But they've got beautiful tone, texture and deep rumble with lots of detail and crispness and are incredibly balanced with no congestion or sibilance. I could listen to these things all day with no fatigue. All that in a small, travel friendly comfortable package. They are so good in so many ways and have given me everything that I was hoping for in them and more. Thank you, Bob