I did know that this was a rebranded version of Ultimate Ears' Super.Fi 3 earphone, and since it was reasonably cheap, compared with the original model, I decided to buy it.
Main problem initially was wearing it, as it has a somewhat different design, and is supposed to be worn over the ear. However, once you get used to it, it is very practical, as the cable near the earphone is stiffer and can be molded to fit your ear, keeping it fixed there and removing any microphonics due to body movement. Just ignore the fact the earphone sticks out of the ear...
As for sound quality, it shows the usual signature for single balanced armatures, with a very crisp sound on highs and mids, especially this last. It may sound harsh at first try, and I swear this was tamed after the 50 burn-in hours, though it doesn't really makes sense for being a balanced armature... Bass is somewhat weak, impact being noticeable only with a good fit, but don't expect much. It is however well defined and quick, just not as fullbodied ( for lack of another word...) as a basshead would prefer...great for classical music though.
Overall, for me it was a great purchase, being one of the few balanced armatures at this price range ( except perhaps for SoundMagic PL-50, which I want...just to compare), and if you don't mind the format, and are not a basshead, I recommend it.