These are okay for the price, but all the hypey reviews you can find with a bit of googling made me expect them to compare favourably to the £10 Sonys and Phillips. They don't.
They're really toppy (and yes, I know about how to make the seal work on in-ears, and that wasn't the problem). It's really clear for spoken word like the radio, podcasts or audiobooks, but there's almost no bass. The audiophiles seem to be saying you can sort that out by fiddling with EQ, but it didn't work well on my iPod Classic, and was just about passable at a push using EQ on my phone since I'm not a basshead. But really, for another few quid, it's worth getting something better.