Although I am new and inexperienced with the IEM scene, I found these to be quite fantastic- especially so after using decade old Apple earbuds. It took a while to get used to the rubber tips, but now that I am used to them the fit is comfortable and snug. The sound is crisp enough, and more than sufficient when listening to streamed music or MP3. I've yet to plug these into my Schiit hardware, to see what they're capable of, and compare them to whatever else I have lying around.
I've had these for a few months now, and so far I am content, except for a few nuances. The more serious of the two, which I discovered recently, is what seems to be a rattling/vibration coming from the left channel, making the sound seem fuzzy/tinny in the higher ranges. Seeing as how I've been relatively careful with these since I've gotten them (They cost me a pretty penny, after all), I'd like to rule out damage due to mishandling. That said I have dropped them a few times, emptying pockets or having them yanked out of my ears. If that's what it takes to damage the hardware, it is unfortunate, but so be it. The second pet peeve I've got with these is the Velcro sticking to everything and the kitchen sink, and it seems that the adhesive holding the two strips together is getting slowly undone. The braided cable is also sometimes quite a nuisance to manage and direct where you want it.
Overall, these guys are pretty great, but personally, I could have easily gone with the $60-$70 variant of these IEMs and have still been content. I'm either moving around and have them plugged into my phone, or sitting with them on at university, and with the amount of background noise there is in such environments, perhaps the marginal increase in performance isn't even that big a deal. I'll see how this "tinniness" in the left driver develops, and whether I'll be able to do anything about it.