I bought the Behringer HPM 1000 headphones about 3years ago along my guitar amp. I have to say they are one of the best pair of headphones I have ever bought. I use them every day and wouldn't consider buying a different pair of headphones. The sound you get is excellent, they have bass built in; not a lot but enough for you to feel the beat well. The jack on the headphones comes with an extra fixture that means you can plug the headphones into your guitar amp and your pc/laptop. The length of the headphone wire is approximately 2-2.5m (my best guess), which comes in hand when your playing guitar. The length is easily adjustable to fit your head comfortably and the top is padded to give you some comfort on the top of your head. I also thought i'd mention that i've had them for 3 years and they still work just as good as the day that I bought them; they've been thrown around all over the place.
However great these headphones are there are some downsides; the same with every electronic product that you purchase. While the long wire is great for using with guitar amps; giving you the length needed to play guitar from a distance, it can be rather annoying when your just listening to music. The wire gets wrapped around my computer chair and i've nearly tripped over it half a dozen times. One other thing that could either be considered as a disadvantage/advantage is the containment of noise within the headphones themselves. When you put some headphones on you can't hear any external noise, where as with these you can head a little bit of noise that may be going on around you. Im not sure what the damage may be to your ears with the internal headphones so I can't really say whether this is a good or bad thing.
The final thing that annoys me personally is the fact that if you wear glasses the headphones can put pressure on the glasses and they dig into your face slightly: I'm quite sure this is the same on every pair of headphones.
Would also be cool if the individual headphones would rotate 360*
Ultra-wide frequency response
High dynamic range
Weight 232 gms
Conclusion: For a price of around £10, you won't find a better pair of headphones. Even though the wire is abit annoying and they are quite huge if you wear them in public, when you compare the downsides against the cost and quality of sound; you'd be stupid not to buy them.