Pros: Look awesome. Balanced sound. Bulletproof (jokes, it's just kevlar reinforced cable). Cheap.
Cons: Slightly dull >15KHz. Annoying to take off/put on. Feels like cable kinks easily with sharp bends (bit too stiff)
I use these mainly for when I'm on stage or when I'm mixing live, running around adjusting a muzo's in-ears/wedges.
These are perfect. For 100bucks anyway.
But the unique thing about these I've never experience before is that it makes me want to see how far I can turn down any track and see how far I can go before I lose those details I've never noticed before.
They simply sound capable of reproducing whatever you throw at them. Sounds are no longer squished together. I can now discern clearly what level instruments are relative to others as opposed to something sent through a compressor with a hard knee and ultra high ratio. i.e. it sounds very clear, linear and distortion-less.
They come with a perfect little flat oval case with the Shure logo stitched on. Very nice and pro-looking.
They do lack a certain brightness, making cymbals, etc. sound slightly distant. But they demolish listening fatigue. Hours of listening, and normal hearing
They don't lack space, they just don't shimmer as much. Which really reduces listening fatigue during long gigs and rehearsals.
When listening to music, it's very raw and clean. It doesn't try too add something that isn't there, but everything that's meant to be there is.
The cable is a little stiff (plus heavy and thick), and being an engineering student, I know that it is a little too stiff for massive amounts of bending, which a bit of a downer, because I needed a running pair, too. But it's all good, 'cos the cable is replaceable! Albeit a little pricey, it's ultra simple and easy with the snap connector. Some people have complained about the swivelness of the connector, but I find it makes it a whole lot easier to get them on, and it feels sturdy enough.
So that's about it. ;)