The Russian….in their day Soviet…conductors had a reduced presence in the West. It was hard to judge some of them until they defected. They had decreased concertizing, decreased recordings (for the longest time, the only Mravinsky recordings generally available was the Tchaikovsky Symphony set). They never got to play Mahler or Bruckner. So at best I give them an incomplete.
I personally never cared for Mravinsky. He had all the warmth of a 10 year stint in the Gulag. Kondrashin and Rhazdo were more interesting to me and their legacy has grown as more material becomes available. Svetlanov could be hit or miss. I always viewed him as the Soviet Solti with lower Orchestral standards, but there are some recordings, such as the Tchaikovsky Manfred, where he hits all the buttons

