Sennheiser HD-555 headphoes

I am going to move to a block of flats in a few weeks and so I definitely need headphones to be able to listen to music without disturbing neighbours. Thus I would like to have some advice in choosing good and not too expensive ones. I have read some reviews about the abobve mentioned head phone models and have gained only good feedback of Sennheiser products. They are even rather cheap hi-fi head phones (80€).

If you have some kind of experience of the particluar head phones, I would be more than pleased to receive your own briew reviews (plusses and minuses etc.) Or Sennheiser products in general.

Also if you have other ideas of approximately the same price please feel free to give proposals.