Summary: They're sufficiently comfortable, as they come with three sizes for the ear plugs. They also come with a small (about 2.5" x 5") smooth black pouch, apparently for carrying the headphones. While it is definitely better than throwing them randomly in a pack where they may get damaged, the bag itself is very thin and not wide enough to easily put the headphones in.
Pros: I am not very familiar with much variety of audio-related technology, but from my untrained perspective they are very good.
Cons: While the quality may be great, the bass isn't noteworthy. They're just fine for everyone however, unless you really care about heavier bass.
Summary: I know a number of earbuds have them but the slider on the cord is nice to drop the volume quickly without having to pull out my phone/ipod.
Pros: Excellent quality on all levels... fits comfortably in the ear without the soreness that can come from other ear buds. I was surprised by the quality of the lows. I've listened to everything from Pandora to lossless audio and been very satisfied!
Cons: I've liked the noise canceling in my Shure ear buds better. These do a decent job but not as much as I would've liked. But for 50.00 I'm not complaining.
Summary: After using apple headphones for years, I was determined to get a decent set of headphones. Sennheiser sound quality is unmatched for such a reasonable price and it includes a pouch with different sized ear buds which comes in handy. Also I really like the volume control feature, no complaints here.