I have to thank bigshot for the Geza Anda tip: it had been years since a Mozart recording made me so emotional. Here I am listening for the third time to the Andante of Concerto no 17 with goosebumps in full force 
Since I am here, I'll second LugBug1 recommendation for Jacobs Figaro, my favourite recording of any Mozart opera and one of my "desert island" CDs...