Is this a joke? So many things wrong here that I don't think I will even bother to reply at length.
Soundstaging on the HD-598 "really fell short" but the closed M50 doesn't?
Where to begin...

I had them for a week as well and are no where near the sound quality of AKG701 - not transparent enough - bass was wooly - was good sounding only with poor quality mp3. For lossless acoustic instruments and soundstaging it really fell short - I would pick up ATM50 over these anyday ...
I am sharing my impressions cause I bought them after reading glowing reviews by folks including Jude ... this phone just did not do it for any purpose - not for the money and not for the sound quality ... I have better choices for listening to MP3 and so many IEMs can do a better job for the same price ...
Cheers
Sunil.























