Gardner Dozois is the most acclaimed editor in modern SF, so when he pulls together what he claims are the best short SF novels from the mid-eighties to the mid-noughties, you can rest assured that's what you're getting. This is a huge collection of the best the genre has to offer, covering a wide range of styles, themes and subject material, and immense value for money.
Many of the stories are recognised classics. You probably won't like all of them, that being the nature of anthologies, and my favourites almost certainly won't be yours, that also being the nature of anthologies, so I won't go into details. That said, hats off in particular to Joe Haldeman's "The Hemingway Hoax", which effectively combines a solid SF premise with srong characterisation to make a moving and poignant point that almost certainly couldn't be done in mainstream fiction. It's rather like what Phil Dick might have written had he not been crazy.
All in all, this book is an excellent, hugely economical way to get hold of the best of the best, and if you don't have very strong feelings for at least half of the stories in here, well, modern SF just isn't for you at all.