I've had a set of Sennheiser HD 280s as monitors for a home recording setup for years. When I got them I thought they were nice and neutral, detailed if a little bright. So I liked em and basically ended up using them for general listening purposes at home as well.
I recently had to replace them and went for HD 380s instead. I was shocked at the difference. To me it sounds like the bottom end is way more pronounced and dominates the sound. But after thinking I realise that having used nothing but 280s for so long they've become my reference for what I perceive to be a neutral sound.
So I'd like to know what people think is a good benchmark for neutral sounding headphones and more generally what they think are the best headphones to use as monitors?