Not only is this not the best Rostropovich version (try the ones with Boult or Khaikin) but it is not nearly as good as some more recent versions, such as Jean-Guilhen Queyras on Harmondia Mundi (with perfect balance between soloist and orchestra and a deeply poetic and powerful interpretation)or Hoelscher with Keilberth on Warner/Teldec (wonderfully executed). There is of course the classic version by Fournier with Szell and Casals with Szell. If you must have Rostropovich, get the Khaikin version with those wonderfully fruity Russian horns: he sounds so much better there than with Karajan whose orchestra is just overblown.