I want to find the 'best' version of piano sonata and symphonies by
Beethoven on CDs.  Any recommendations? Who is the top player / conductor
in sonata and symphonies? Moreover, I don't know if it is better to buy a
whole set or different pianists in separate CDs.  e.g.  Pollini on latest
pieces.  Please rank with priorities for them!  Thanks.

Regards,
Lam