I will second Newbee's rec: "Sviatoslaw Richter's version on DG, ain't chopped liver, circa 1959 (again if you can find it).." It is marvelous. While I do have the other versions mentioned, I think it the one to beat, although Newbee's short list is excellent. I recently found this LP in mear mint condition, so do look for it!
Look for DG 138 076
-Kurt
Look for DG 138 076
-Kurt