My sympathies are with Gordon, I think I've moved on and would prefer to listen to Haydn's quartets, trios or late piano sonatas, probably also his later symphonies.
I would agree the Bohm Requiem - suggested Harnoncourt as a good more recent recording. The Bohm from the early 70s is superbly recorded from my recollection.
I would agree with some of the piano concertos, the latter the better, I would suggest 503, 491, 488, 467, 466 (Barenboim / ECO)
My preference is for Perahia and Uchida, mainly influenced by concert performance. I recall Perahia performances of Mozart piano concertos from many years ago. For me Argerich is for the Romantics.