Sound is clear, however, they keep slipping off ...
927215
Sound is clear, however, they keep slipping off.  I have to wear them upside down in order for them to stay on.
395860
Sound quality is very good.  However, they don't stay secure to the ears.  They fell out within the first 100 feet of starting a run.
4274772
That's basically it.  These sound very good, at very high volumes they get a bit muddy though.  Yes, of course they are a bit cumbersome, yes of course u will get a bit hot walking around with these in warm weather, but hey, they beat ipod earbuds.  My only problem is that one pad keeps popping off.  This morning, it popped off as I took them off and it fell in a puddle.  I didn't even see it 'til some angry businessman barked it at me.  So, i guess the next step is superglue?  At 70 bucks or whatever they are, i really counted on them lasting a couple years, and they do sound pretty darned good, so I'm not too stoked about this.  I will say this, the first few weeks of owning them are great, in that, after spending years rocking only the ipod buds, it was refreshing to rediscover my library as it was meant to be heard.
2221565
Sound tinny, but most disappointing thing is that they won't stay in place...I have to keep pushing them back (even after changing the cones...).
469743
Sound is good. However, fitting these things in my ear properly requires a mirror-- every time, and I've been using them about 2 months. Even with a good fit, I hear the thumping sound of them moving in my ear when I do any running or jump rope. Lastly, they tangle really badly in my gym bag no matter how I wind or wrap them. I probably have returned these if I hadn't missed the 30 day return window.
763173
The sound and clarity are good but when I run they tend to come off of my ear so I constantly have to push them in.  I have this problem with other over the ear headphones.  I wish the curved part was adjustable so that I can fit it closer to my ear.
554424
They sound fine, but no matter what size tips you use they have a problem staying in your ears!
2735342
Great sound however the clip is not strong enough or big enough to hold onto my collar. It kept slipping loose and sliding off.  I spent the day trying to keep from losing them off my neck.
1684168
These things are fine when I'm stationary, but if I'm in the gym or out running I have to adjust them to stay in my ears every 10 seconds. I've tried each of the sizes, not sure what the deal is. Otherwise sound is fine.
3459147
It takes some doing to get these on my ear buds.  It's a challenge.  That said, I don't think these will ever come off and get lost inadvertently either.
4147784
Sound fine and stay on fine, but the foam covers regularly fall off.

Update: I have finally stopped trying to get the foam pads back on when they come off, which is all the time.  Without the pads, these are less comfortable.  Still sound fine, so I still use them, but wouldn't buy them again.
2712954
These headphones work great, and sound pretty good for the price.  My biggest issue, is that the rubber ear buds fall off.  I've actually lost 2 pairs already (3 sizes come with it), and now I'm using a size that doesn't fit my ear correctly.  If they could fix this issue, I would consider them to be well above average.
3763451
I bought these before, but the new ones keep disconnecting from the jack. When I walk and move my phone, my music gets paused or starts playing through the speaker while headphones are still inside. But besides that, the sound quality is excellent. As long as I don't move my phone too much.
1806957
They sound awesome, but speakers easily come off and get lost somewhere. I've used them for 3 days (they fell off 5 or 6 times in that time) and on the 4th day lost them completely.
464241
These are good but unfortunately the grip inside the ear slips off on one side and its extremely hard to put back on. I feel like I paid good money I should have a quality product that does not fall apart !
4841449
They sound pretty good, but tend to slip when doing the activities I bought this to use with.. When working out, the left one always slips.. When biking, they get push outward by the wind. Battery life is excellent and have had no connectivity issues.
2986250
Cannot get these to go on and stay "clear"... I am on my third of the 4 that were in the package...