"Superb, but only for home listening"3.5 starson by kingfelix
Pros: Great sound quality and build quality
Cons: Not for portable use
Summary: These Grados serve up incredible sound fidelity for their price; they might be the best sub-$100 headphone.
They do not isolate you from the outside world, however, and they do not isolate the outside world from your music at all. This makes them unsuitable for loud locations such as the bus or airplane, where you'll deafen yourself (and annoy the other passengers) if you turn the volume up far enough to listen to your music. They're also unsuitable for quiet locations such as the library, as the music you're listening to will be quite audible to those around you, even at moderate volumes.
For home use, though, and for the odd locations where it's not too loud outside and there aren't other people in close proximity, these headphones sound amazing. I'm glad that I own them.
Be prepared to adjust them yourself to make them comfortable (instructions included with the headphones, I believe). The headpiece gets much more comfortable once it has been squeezed to your head shape. Even after adjusting them, these aren't the world's most comfortable headphones.