A good bunch of new Holmes stories. The editor promises in his foreword that all the stories included in the book would be faithful to ACD's Holmes, and hits the target: they could have very well been written by Arthur Conan Doyle himself.
There are different reasons for reading Sherlock Holmes' pastiches: 1) you like the Victorian setting 2) You like the characters 3) You like logical deduction 4) You like mystery.
Generally you can find satisfaction for the 1,3 and 4 needs in different books but if you are in for the motive number 2 you must read about Holmes.
So given that all the authors here are capable of delivering a good mystery story I'm judging the book mostly on the ability of re-creating a believable Holmes ( and Watson).
I must say from the start that the book is good, way more than the average collection. Maybe the best collection I've ever read ( near to Shadow over Baker Street) especially because these authors truly love Holmes and have a great respect for him.
Most of the cases took inspiration from quick citations made on the Canon ( es. Giant Reed Leech case) and the authors use all their ingenuity to use whatever element Conan Doyle left for them.
The Enigma of the Warwickshire Vortex is a clear example ( a little far fetched in my opinion but funny) of what the authors must create to fit with the previous information.
I can't name the best story ( everyone will have its own, I'm sure) but The adventure of the Dorset Street Lodger, The Mystery of the Addleton Curse and the adventure of the Inertial adjustor each have their great merit.
Shortly: if you like Holmes, Mystery, Victorian London and respect for the character buy this book.