So I've bought these to have another pair to use while playing guitar in the evening without disturbing neighbors. I dont need studio quality stuff for that, I dont use them very often either, so for that these headphones are a good compromise.
Comfort is good too, just stretch them if they are too rigid, and the pads barely make any noise if they move, which is great for this price range.
They sound is harsher on the highs than I'm used to, with my normal amp settings that is. To test em better, Ive played few classic songs through them with the PC, they definitely sound highs heavy and sometimes so harsh that they are not pleasant at all, but most of the time, they sound quite right. Equalizer and so on...
For 20 euros, they are great, most headphones below 100 euros dont sound much better than this, not worth it IMHO, never mind the highs.
But if you plan to spend a lot of time with headphones on, buy the recommended high quality stuff, not these, you wont regret it.