I received the '59 mono set of Starker's first 'major' recorded performance of the cello suites, and have listened to it once through. At least for me, for what I'm hearing, compared to all other versions I've listened to (Starker's later recordings, Rostropovich, Kirschbaum, Fournier, Bylsma), all the old hyperbole is right: this is _the_ version against which all others should be compared. Even with it in mono.
Interested to hear what other listeners think - after you've listened to it, of course : ).