Pros: Spectacular clarity and PRAT.
Cons: Sound leakage. Lack of bass, loss of detail when used without an amp (300Ω version)
These are amazing. If you can get them for a low price, do so.
They are a bit uncomfortable, so you might not want to use them for long periods of time. Their clarity is fantastic though, the bass while not being big in quantity is extremely accurate and with a decent amp (I'm using the 300 Ohm version of the headphones) it is just fantastic in quality.
Despite being a closed headphone they sure leak a lot of sound. So you probably wouldn't want to take this to a place with a lot of people.
Luckily they are extremely durable so even if a person siting next to you on the bus gets annoyed by ur music and tries to destroy the headphones it will be very difficult for him to do so.