beats by dre - 
there are better headphones on the market for much less.
thats why i went for the urbanears headphones. they have loads of great reviews, excellent sound quality and decent price too
They are still a form over function headphone though. Just the name suggests that. They probably cost about 50p to make and have poor drivers.
To be honest Ant... if you can wear the CX300s with no discomfort then they are you best bet for sound isolation and good sound quality. They are also very light so you wont end up with neck ache from wearing 500gs of headphones on your head. 
For general use the CX300 are brilliant but i wanted over the ear headphones to keep in the office. The AKG K450's arrived this morning and Muse - Madness sounds sublime!
