Ok seem to be a few debates on this topic. My issue is i have an Ipod and want some earphones to complement is as the original 1s, you get are poor. I originally had the Sony fontopia cant rem model but retailed at 35 i think. but for some reason ive lost them. Ive come to a comclusion that i want a good set, ive been looking at the ER4P by Etymotic, and also seen the £20 mx500s. Has ne1 got any of the above and tested both, are the ER4P worth the £239.00 or can ne1 reccomend anything better than my old sonys for fullness etc. I did come across these babys but that is overkill http://www.ultimateears.com/UE-10_PRO.htm Thank in advance P.s i can afford the ER4P but am i wasting my Money ?