As is the way with most anthologies, the stories by authors I enjoy I enjoyed and the stories by authors I had never heard of didn't exactly inspire me to check them out. Anthologies are like that and, I admit, I'm really bad at reading through them. They are better encountered a story at a time, but I can't read that way and books need to go back to the library sooner or later.
I picked this one up because of the topic and because a bunch of the authors were familiar to me and I knew I liked them. And, as expected, when it was good it was very good and when it was bad it was boring.
Overall, I preferred the stories that riffed on known characters/historical personages over those that were simply set in a gaslamp setting. And I far preferred those with likable main characters over those that, for whatever reason, chose to focus on evil characters and magic as a manipulative force that selfish people use to get their way. It just falls into my brain-category of "Why would I want to read about that?"
And the stories I liked were, as I said, often authors I already knew (with a few exceptions) and the stories I enjoyed seemed to be weighted towards more well-known writers.
That being said, this book was worth picking up for Terri Windling's introduction alone.

So, if you're me (or like me), and you're wondering which authors are worth reading in this anthology, here are my picks:
Delia Sherman
Kathe Koja
Elizabeth Bear
Kaaron Warren (It's the one story that fits into the aforementioned category that I still thought was worth reading)
Veronica Schanoes
Catherynne M. Valente
Ellen Kushner and Caroline Stevermer
Jane Yolen
Gregory Maguire
Tanith Lee
Theodora Goss