Good, If you like in-ears,
This review is from: Shure E2c-n Sound Isolating Earphones (Black) (Discontinued by Manufacturer) (Electronics)
I was on the market for a pair of earbuds to replace those terrible ipod pack-ins. After much research, I settled on these. I must say, they lived up to the praise in regards to sound quality. You'll be surprised by the small nuances that good headphones can uncover in your music. These are pretty balanced headphones so you're hearing the music as it was recorded. If you love your big bass, look elsewhere.
However, what I didn't expect was how uncomfortable they would get after a while. After finding that none of the foam pieces gave me a good seal, I used the soft rubber fittings. They feel fine for a bit but they soon make me want to tug at my earlobes to take the pressure off my ear canal. Of course, after doing this, I lose the seal and have to re-insert the buds. Annoying.
All in all, good sound quality, but your level comfort may vary.