PRO: Great imaging, instrument separation, mids and bass clarity and quantity. Can easily beat most of the $100 and under IEMs I've heard. Immense detail for a "bass-adequate" IEM.
CON: Treble rolls off a little, but not in a poor way. Flat J-cable. Sound stage is not small, but smaller than an IEM it sonically competes with, the Sony EX600. A little distortion at moderately-high volumes.
Beats the Yamaha EPH-100 a bit. Wrecks the Vsonic GR06.
Props to ClieOS.