Thanks for the reply.   Would you happen to know how these differ from the Audio Technica ATH-M20?   I know one has 50mm drivers, but i'm not sure how that would benefit me, if you could offer a brief example?   Thanks :)

Hi,   I just want to say I love forums like this, community-led pools of knowledge are never un-welcome and it's rather admirable. I've previously used this forum a fair bit for pre-buy tips and I find it to be great, however this time i'm at a loss and can't seem to find an answer to this...