Excerpt: Design is most comfortable headset I have ever used. Trade off is this is an "open air" design that does little to block out ambient noise. Bass is good, but can not compare to a sealed, closed type headphone. Use as a phone conversation headset is better than using the phone itself, bluetooth,or any other headset I have ever tried.
Pros: Comfortable, Compact, Great Sound, Lightweight, Stylish
Summary: The sound is very good. Deep, well distinguished bass. Clear treble tones, They perform well with no mud at high volumes, sound is clear and strong across the spectrum without distorting/noise. The unique earbud style simply don't work for me, I tried each different size and style that came with the set. They blocked virtually zero external noise. I fly everyweek and they block none of the engine noise.
Summary: As a person who is used to monitor grade over ear headphones, these were quite a nice surprise. Not right up there with the true monitors but they deliver powerful enough bass and full bodied tones to keep me emotionally charged. Even when the phone cord got caught and almost cut in some equipment, they still preserved their vital impendance to keep the sound quality true.
Summary: These are the best earbuds I've ever owned. The pads don't come off easily. The sound coming from these buds are the best ever. Highly recommended. But, if you run or exercise with these, get the ones without the control. Sweat gets into the control easily during your exercise and after a short while, will render the control useless. The earbuds will still work, but not the controls.
Summary: First I want to say that Bose did an amazing job with the sound quality out of these little things. My only beef is that I will now be buying pair #4 as all of the previous pairs have died within a year or two. Always the same problem - one of the buds dies. I keep them in their case, and carefully wind them up after use, but babying them still doesn't seem to help. It sounds silly, but I will be buying them again, despite this. The reason? Unmatched sound and comfort.
Summary: Pros - Sound is great, especially at higher volumes. - Fit perfectly and stay in ear, you can wear them for hours and hours and never get hurt/annoyed Cons - The remote seems to be quite fragile. A tiny amount of sweat seems enough to damage it permanently... read the full story below if interested. Bottom line: get a 2 year extended warranty, you'll probably need it, they're not very durable.