i too got the HD 201 from ebay for 980 bucks after the Rs. 300 discount coupon ..
i am pretty sure they ore genuine cause i got it with a bill stating 2 year warranty and even the box was completely sealed.
and here are my impressions after almost 50-60 hours of playback..
yes it’s true initially the bass is almost absent ..after like 30-40 hours of burn in they sounded much better.
but still bass is less.(no i am not a bass freak
)
the mids and highs are really good..specially when i listen to vocal trance..i feel as if ive got some real good headphones..
rest of the time i dont feel as if these are for 1300 bucks. 
also the total output\volume when connected to my onboard is quiet less…maybe i shouldnt even expect much from the onboard (p5q pro)
it sounds better on the ipod. but again the bass gets distorted at high volumes..
one thing i noticed..to get best output from the PC i connect the HD 201 to the MX 5021’s volume console\dock
and then from there when i adjust the bass ,treble and master volume from the dock..
the SQ \output increase a lot.
i have no idea why there is so much difference..maybe because of the internal amplification of MX5021.(I could be wrong)
overall its a decent pair of headphones ..only if there could be a little more bass
.. or else maybe the headphones dont give their best when connected to onboard.
cause i find most of the things in online reviews very much contradicting .
Audiophile Reviews: My Sennheiser HD201 headphones review
though i am no audiophile or audio expert still my expectations were more when i decided to get them after reading the reviews .