My personal list:
- Anything Beyerdynamic: all models are bright and painful. How they have so many fans escapes me completely.
- Anything Grado: to me they simply sound like a treble happy mediocre headphone that costs around 1/4 of the price. Bonus points for crazy pricing too.
And finally, to me the number one most overrated product (maybe even ever?) on Head-Fi, Audeze LCD-2. Worse soundstage than on good IEM´s, recessed highs (neutral, sure...), and feels like wearing a brick on your head. To think I once sold my HD 800 to try the LCD-2 makes me sad. Luckily it has good resell value.