Sennheiser Circumaural (Silver)

Pros: -Comfortable to wear
-Average sound quality
-Long cable
-Adjustable size
-Good build quality
-Isolates background noise pretty well
-Doesn't leak at smaller volume
-Covers ears nicely and doesn't leave annoying gaps
-Firm and durable plug

Cons: -Lack of bass, especially at lower volume
-Sound leak at high volume
-Leather padding too small
-Internal cable may snap
-Weird vibration at higher volume (sometimes)
-Cord tangles easily, and untangling is hard
-Size adjustment moves on its own

Summary: I bought these a year ago and the upgrade was worth it from $20 headphones. The sound quality may sound bad at first, but when you add volume the bass gets richer and the highs and lows sound better. Isolates noise very well in a train, but the noise of a car or a plane is too much. I had to buy new ones because a cable snapped inside and the left speaker wouldn't work at all. Also, the size adjustment may move on its own if you move your head rapidly. The cord may be too long for portable use, but at home the long cable is good.

As I said, the bass isn't mind-blowing, but it isn't poor either, but you have to listen closely to hear the best possible sound. For an average listener like me, it is good enough.

Overall, if you're a normal listener or want to upgrade from very cheap headphones, these are a perfect match.