I bought these as a cheap spare during repairs of my regular cans, didn't expect much but have had some good experiences with Sennheiser.
I was very positively surprised at first use. These actually sound like they reproduce sound as intended in production. And at a silly low price.
Cheap headphones (as well as some very expensive ones) often over-emphasize low frequencies. Which of course is worthless in a mixing situation.
I have seen some reviews here that actually complain about the lack of bass / beats / untz. Me, I prefer cans that colour sound as little as possible.