Paul Paray, Mercury Masters Volume I

I learned my lesson last year with the Markevitch/Philips set. Eloquence Box sets have chaotic releases. Same thing happened this time. The set appears, amazon has contradictory indications, it is not released yet, it was released last month, out of stock, currently unavailable, the supply chain ate it, etc. You just have to wait for it to percolate to this hemisphere. Today (fingers crossed) I scored one from importcds.com for the lowest price I have come across, $81 + $4 shipping.
Volume I has the mono recordings that didn't get released in the three Mercury Living Presence Box sets that came out years ago (including Brahms 4). I will probably pass on Volume II because I think all of the signifiant stereo Paray recordings on Mercury are in those boxes (which I have). That could change if I found that the new masters here are a big improvement, but I don't think that is likely. The previous releases sounded very good to me. They were produced by Wilma Cozart amid some fanfare, going back to the original tapes, etc.