Do the UEs ever break? I had a clear cable (5pro) which turned GREEN (copper oxidizing in the cable where it loops over the ear.. so much for oxygen free copper)- their solution was that.. 1) it doesn't affect the sound (jury is still out on that) and 2) they send me a black replacement cable...

I have the triple.fi 10vi- it is very BULKY! So if you have a small ear (prior use of IEM-- you'd know), then you might want an alternative- as in super.fi 5vi. The 5vi doesn't have the same bass quality but comes pretty close to having good highs and mids- and only for $130 online. Note that...

I like the guess by the previous poster- that OEM might mean, a rejected headphone from the factory. The one that I got off ebay (vendor from UK), around $20 + $10 shipping is definitely a fake. I bought a real one from micro center- and got curious about what I'd get for $30. The fake one...