Klipsch X10i : Volume distortion at high levels, treble gets overpowered by the mids sometimes, build quality is poor.
Etymotic HF3: Triple flange tips are extremely uncomfortable so I use Klipsch oval tips and they fit perfect, bass doesn't extend deep enough, hardly any sub bass but they are very accurate, I am just used to heavy bass. Other than that these are my favorite iem's of all time.
Monoprice 8230 : cable is awful and they fit horribly and feel really cheap, look very ugly, sound great for their price though
Phillips she3850 : headphone jack looks very poorly made and cheap rubber, they sound absolutely amazing though.