I'm so old I still think of So as the 'new' Peter Gabriel album.
But OK, best scores-- as opposed to soundtracks, i.e., collections of songs. I've mentioned some of them before:
Danny Elfman, Beetlejuice
John Williams, The Witches of Eastwick
James Horner, Star Trek II: The Wrath of Khan and Star Trek III: The Search For Spock
Jack Nietzsche, The Razor's Edge
Tangerine Dream, Miracle Mile
Jerry Goldsmith, Explorers
John Barry, The Living Daylights
Thomas Newman, The Man With One Red Shoe
Mark Knopfler, Local Hero
Elmer Bernstein, Stripes