been using the CK10 for past 3-4 years roughly, went and bought it due to the high recommendation from this website
well here are my thoughts
they are not that durable: mine broke straight after warrantee expired, the cables are nice and leaves me great first impression of sturdiness but regardless of how good others reviewed it, mine broke. Other reviewers did not test their ck10 over a year in order to test their durability (but hey, who would lol ), they would ASSUME they are durable by just comparing to the different material used comparing to cheap ones and how good it feels.
i could get mine fixed at an authorized retailer but it would cost me the exact same price of the iem, i got it fixed at third party that specialized in fixing headphones, though getting it fixed at third party would harm the aesthetics of the look but i dont really care since it costs me only 15-20.
the rubber wrapping around the whole driver piece on the ck10 wears off overtime, i wouldnt say badly but considerably, still its not like they said in the review that its extremely durable, the texture on the marble wears off becoming overall silverish. but hey ive been using it alot its my main headphone for 3-4 years and i listen to music daily.
over the past 3-4 years i probably taken it to the technician to get it fixed 3-4times, one of the driver becomes silent, but thats because of the cable, after being fixed it would take 4-5 months before it starts breaking up on u again.
okay enough of the negatives here are some positives.
they sound superb
bass quality 9/10
bass quantity 6.5/10 (this is quantity of the bass 10/10 does not reflect on how good this is)
mids 7/10 (compared to shure 535, yes they are recessed a bit)
treble is 8/10 (nice clean airy)
isolation 10/10 (cant hear anything when ur using those except ur music, blocks everything)
comfort 10/10 ( small driver = perfect fitting, the shures are too big, people would think u are wearing a hearing aid)
i like the sound of shure 846, i have tried it, the sound actually gave me a wow factor, however its too expensive and too complex
by complex i mean different filters, cables, amps/dacs combinations possible of altering sound, with ck10 u dont have to.
people judge sound too much on their clarity and quality, but i enjoy some graininess in my music. lol this is getting off topic hope this helps seeya