Never cared a lot about the score itself, "Storybook Love" is great though. I think the score is generally bad simply because it's all samples and electronic music as far as I'm concerned. And the mid-80s electronic music, I must add! But not a lot of people care, the same thing with all the Kemper discussions. Personally, I prefer movie soundtracks performed with an orchestra... Terrible? I don't know, I think it compliments the movie pretty well.
While the Local Hero soundtrack was 1000 times better than the movie itself, I think Mark learned his lessons and made "Princess Bride" soundtrack in the same league as the movie.