Have at it folks. Previous discussions I have read seemed to nominate the HD600.
I do like the fact that it is quite neutral and very detailed. It seems to be able to bring out all the small details of a record, and present in in a close-to-real way. Not far from what you would have heard if you were there in the recording studio.
The K1000 do run circles around the K701.
Lots of Dynamat Xtreme and cotton dampening!
O2Mk1: strings, brass, woodwind, percussion, and voices sound very accurate. And the bass extends very deep.
Haven't examined the K1000. Would like to.