I had these a while back and found them to be pretty good alas they did have a couple things that spoiled them.
Comfort: Finding the best earbuds took a bit of time. Although once you did, they were comfortable enough.
Sound Quality: These have a tight-bass extension, providing enough energy for most music. Some hip-hop fans might not like their politeness when it comes to phat bass however. The treble especially in dance/EDM often sounded a bit bright unless you used an equaliser to take the edge of the sound at 10Khz and beyond.
Design: Awkward Fit. Otherwise OK.
Tech specs: Sensitivity of 115dB @ 1Khz (32 Ohm Impedance)
In-Line volume control