What you need to find out is whether this is his cycle from the 60's, or from the late 70's/80's. If it's from the 60's, jump on it, cause it is excellent. If not, avoid it like the plague.
The set from the 60's is my second favorite cycle after the John Elliot Gardiner set, not sure if Gardiner is available on SACD, but if it is I highly recommend it.