I'm totally with you bud..I have a few of the Massdrop-released mid-fi-ish headphones, specifically really enjoying the hd6xx as well as the he4xx lately, but this is my first venture into this range of IEMs and have absolutely been nothing short of stunning. The detail they provide while managing to avoid any harshness or sibilance, their fantastic instrument separation, wide and lush soundstage, dynamic quick and satisfying (and adjustable) lows, and their still intimate and forward presentation of vocals and the mids to upper-mids in general has me appreciating new details in music I thought I was already intimately acquainted with. It's given a whole new life to a lot of music I hadn't listened to in quite a while, as well as brought to me a new level of appreciation as to what a properly built and tuned set of IEMs can sound like!
I find myself digging up as many albums as I can find in order to listen for new tracks or details within a specific track that are revealed by these, much the way I found myself obsessing with listening to anything and everything I could get my hands on when I picked up the hd6xx's. And then all the more so when I listen to them with different equipment as they scale brilliantly with different amp/dac setups. I have not been this pleased overall with any IEMs before..I've never had a pair I've enjoyed enough to reach for on a regular basis, even when having the choice of them or any full-sized over-ear phones I own. Bottom line is that these are an absolute steal in my opinon, and sound positively fantastic for the going price of the drop ($129.99 USD I believe) and I would definitely appreciate and enjoy them even if they were in a higher price tier than they were. Very well-rounded set of IEMs! Thanks Massdrop (and others who vouched for them as well)!