That's good to hear. I may try CK10 some day, although I think that for a dual BA it's a tad too expensive. That quite a feat for a BA driver to match or surpass a good dynamic in delicacy. The only BA I've heard that just might be somewhat comparable to RE0 in this regard is the Shure SE535/535 and I also heard something similar in Westone UM2. Every other BA just sounds too schematic by comparison. Of course, I am just nitpicking here and most people probably won't even understand what I am talking about. Everybody is different. Some can't stand BA treble, while others are OK with it. I seem to be sensitive to other aspects of BA sound.