Cons: Uncomfortable, tonally unbalanced
I always see people recommending the HD280 like it's some amazing price vs. quality gem in the headphone world or something, and when I borrowed a pair to compare to my HD555 a few years ago, I was surprised by how bad the HD280 sounded and how uncomfortable it was. The bass was anemic, the soundstage was congested, and the way it clamped on the head was uncomfortable. For sub-$100 headphones, you'll be much better off with the Equation RP-21. But if you could spend a little bit more, you'll get into a far better range of headphones like the Audio-Technica ATH-M50 (for sealed cans) or Sennheiser HD555 (for open cans)--headphones that absolutely destroy the HD280 in every way possible.