This collection of stories is anything but even; the tone of each story varies wildly, and it's sort of a mixed bag. But for the best stories in the lot, the book is more than worth it.
"Johnny Mnemonic", which puts the dreadful movie to shame, is a sort of prequel to Neuromancer, introducing the character of Molly when she was new to her work. "Burning Chrome" is a story about two cowboys, one of them Bobby Quine who later became Case's mentor, who pulled off the ultimate theft from an underworld queen.
But what really stand out in this collection are two other stories from different universes that could have come straight out of the Twilight Zone. "The Belonging Kind", one of Gibson's collaborations, is a thought-provoking glimpse at creatures that are neither human nor alien--and a little too much of both. "Hinterlands" is creepy beyond words, a story that plays on our deepest fears: Astronauts volunteer to be taken to a place where they will most likely return with some technological treasure, but at the cost of their own sanity; no one knows what's out there because no one who comes back ever tells--they kill themselves or become vegetables, without exception. These stories illustrate Gibson's versatility like nothing else; these two alone make the book worth owning.
Some of the stories just aren't as interesting, but they're so overshadowed by the greatness of the better ones that they're just not worth considering as part of a rating. Read it yourself and decide which stories you like better; it's a mixed bag, with probably a little something wonderful for everyone.