Recently did a trial of a pair of RHA MA750I IN-EAR HEADPHONES concurrent with a set of the B&W C5 HEADPHONES on behalf of my husband to replace an old set of Ultimate Ears.

Really cannot say enough good things about the RHA. The overall quality and excellent price make these a fantastic value at only US$129. They sound great, and the heavy-duty build is like something you expect to find in a pro set. But what really sets them apart is the seriously exceptional comfort — the weight of the earbud has a certain balance, and it just seems to seek out the exact perfect seating all on its own. And then it stays there, no muss, no fuss. They also have a fantastic warranty.

If I could justify a set of these RHA for myself, I'd get them in a flash. But I already have a set of Shure SE215 and a Wireless LG Tone+, so it'd really take some rationalizing

Didn't love the B&W set, primarily because they were not nearly as comfortable as either the RHA or my Shure. They required a lot of fiddling to get them seated properly, and I really didn't care for the way the buds stick so far out of the ear. I also felt they were flimsy compared to either of the other two, especially for the price. The C5s sound great, but at $50 more than the RHAs, they're just not a good value IMO.