Cuddle (adding a category!): Lincoln Longwool sheep, my pet chicken.
Snog: Nigel Kennedy, Sir John Barbirolli, J.S. Bach, Elgar, RVW, Shostakovich.
Marry: Monty Don (OK he's not a composer so I'm going ).
Avoid: Einaudi and minimalists, 2nd Viennese School and similar plinky plonky 20th century composers, opera singers whose vibrato is so wide that it may as well be a trill, the Cheerios advert, the Pearl Fishers Duet, prunes, and Fry's Turkish Delight.