I have no idea why most of ppl in this forum seem to go against Bose headphones, I mean, they are not necessarily the best IEMs in this price range, but they are definitely the ones worth every penny you spend on them.  First of all, they are not 100% designed for Hi-Fi uses, if you are trying to compare them with UE18pro or IE80, then you are probably not on the right track. If you look into their design and spec, you'll see clearly that, neither their response frequencies nor the impedance is designed for Hi-Fi uses. then, what's so good about...