Pros: Light weight, portable, changeable cable
Cons: not very durable
This was my first over the ear headphone - I always used smaller ones (earphones). I used this headphone for almost 2 years, and I was rather satisfied with it.
I found the sound quality good, but bass is a bit low compared to other brands - esp. Sennheiser's HD models.
Its design and comfort are the best attributes. It looks very good, it is a thin headphone, very easy to carry around. I used this at the office - sometimes all day (unfortunately I work with very noisy people :)) - and it never gave me discomfort.
I always carried it within its pouch (it comes with a pouch), however, after 1.5 year the right ear started to go silent - if you hit it with your finger the sound would come back - but later it went completely silent. I must say, I was expecting a longer life from a Bose headphone.