I don't think any of the records translate experiencing him live (especially when he was a bit younger and more forceful), although a few come close. Conic Sections, The Snake Decides, and the later Schlippenbach Trio titles are great places to start. Agreed about the rhythm section of Edwards and Sanders... beastly!
Seeing the Schlippenbach Trio in Berlin in 2002 was life-changing for me.