Pictures At An Exhibition CD

Does anyone know the best recording of Pictures? I've got an old Leonard Slatkin CD on MFSL and either the disk has poor sound quality or the AR9's crossovers are getting pretty bad.
The best recording in my view is also one of the more primitive recordings going back to 1958 in Sofia, the pianist Sviatoslav Richter. There may be more pleasingly recorded versions I am not sure there is a better played version. Also available on vinyl.
Would also recommend Brendel in a 1960's recording. Usually not a fan of his but in the 60's and 70's I really like his recordings.
If you are talking about the orchestrated version then the RCA Reiner and the Chicago Symphony is a great recording. For the original piano version Richter is powerful