I don't know why I've waited 30 years to read this, when it's been sitting on my shelves and I know I love Ian McEwan's early writing, and I did love this. It's very dark and often gruesome, but that's what I like - that many of the stories we see from the evil-character's mind. Not that even the evil-character is only one-dimensional, McEwan's writing is too clever for that.
I had some favourites: Solid geometry, Last day of summer, and First love, last rites. My least favourite was the last (which was a shame), Disguises.
I'd recommend it as long as you like bad things happening and sick people in your stories.