Well if I were looking to spend that much on a turntable I would seriously consider one of Max Townshend's creations, The Rock 7 http://www.townshendaudio.com/turntables/the-rock-7 http://www.theabsolutesound.com/articles/townshend-audio-rock-7-turntable-tas-209/
The older models on the secondhand market like the Rock III and Rock Elite are great value but prices have been creeping up of late as people discover what great value and performance they offer. The Rock reference is one of the greatest but not easy to come by in reasonable condition.
You can still use a Rega arm or you might like to consider the Morch http://www.moerch.dk/ The great thing about this arm is that you can buy different arm wands to match the compliance etc of the caretrudge you intend to use so you never have to compromise, especially if you change cartridges or use more than 1.
I use this set up my self a DP6 with a VanDen Hull cartridge but with an older version of the Rock.
You may not be aware but Stax produced several binural CD's some years ago. They will pop up now and then on ebay. Mostly classical and one or two other genres like Jazz, Brass Band. I have sampled one or two of these but have to say I didnt find the recorded quality that great even though the binural effect was interesting
Yes, Max Townshend's various versions of Rock really rock. And the days superb vintage gear could be had cheaply is likely gone - forever. To the point those in the know will not mention any particular piece of gear that is in very short supply ( or worse ) on any forum, as what is still likely to surface someday ( within our lifetime ) is nowhere near capable of meeting the demand a single positive post regarding such gear would generate on the global scale.
There is new, improved Morch arm out there - but it is really exhorbitantly priced. I found DP6 a little too polite at all times for truly neutral performer, but it does allow for relaxed listen without listening fatigue - very enjoyable. Rega, particularly 1000, is more "direct" .
Stax never produced their own binaural recordings. These recordings are re-issues of dummy head recordings first issued on LP by West German record label whose name eludes my memory ( have to check my Bielfelder catalogue(s) from the era ) - and to make matters regarding SQ worse, transfer from analog to digital was not particularly accomplished either. Not the premium choice in commercially available binaural recordings. I will try to track down at least one original LP version, as times digital transfers were done belong now to the CD Stone Age.