Pros: Price performance ratio,
Cons: bass might fatigue at high volumes
Ok, so I only spent 3 euros on these at a flea market. The catch was that the original stereo plug had been replaced and botched (all the cables were in the wrong place), so I had to re-solder them. After 10 minutes they were good as new(ish).
Compared to the AKG K141: they seem to have a wider sound stage probably due to the larger cans and thicker pads. They're seem less analytical with regard to treble and mid emphasis in the k141. The bass has more authority and slam than the 141's, the only problem is that this might be fatiguing at high volumes for some.
The biggest difference between the two is the bass, which have better extension and authority - no boom or distortion here.
The only thing I dislike is that the sound can sometimes be a little 'dark' and closed, rather than the open bright sound I like from my Grados.
Also these headphones are very comfortable.