@bigcalm ooh I know some bits about decent 'ear|head'phones. The short answer is that it depends on budget and what you listen to.
Beats = Sennheiser quality with the bass turned up.
Grado = My personal favs, high mids.
Sony = Bassy, but good noise cancellation
Sennheiser = good value for money, but I personally don't like their higher end stuff (I dislike the sound profile).
Shure = well rounded. I just didn't find them esp hard-wearing, I e. They didn't last me very long.
The list goes on.
@SimonB all very useful!
Thank you :)
/me heads off to the big cardboard wearhouse