I've read a few in this series via my library's ebook program. Here are the links to some of my old reviews of them in the What Are You Reading? thread.
The best of the ones that I recorded were (rated above 7/10 on my annual reading list):
The Ectoplasmic Man by Daniel Stashower (8)
The Stalwart Companions by H. Paul Jeffers (7.5)
Also seemed pretty decent but not standout (rated at 7/10):
Séance for a Vampire by Fred Saberhagen (this is a sequel to his
The Holmes-Dracula File (6.5/10) which is available from a different publisher. I got a paperback reprint out of my library to read it after, IIRC)
The War of the Worlds by Manly Wade Wellman and Wade Wellman, his father
Not so good (6.5/10):
The Veiled Detective by David Stuart Davies
IIRC, these are all reprints of vintage Sherlock Holmes mashup pastiches from the 60s-80s, so you can probably also look up old reviews of a lot of them on classic Sherlockiana fan sites.
Also, if you're looking for the really good Sherlock mashups and haven't read them already, IMHO, Nicholas Meyer's (of Star Trek director fame) three books,
The Seven Per-Cent Solution (Sigmund Freud! and a swordfight on a train!),
The Canary Trainer (The Phantom of the Opera!), and
The West End Horror (George Bernard Shaw!) are the very best. I had to find the last two in the used bookstore, though, as I think they were between printings when I first read them.
P.S.
Sherlock Holmes in America anthology edited by Martin H. Greenberg containing newly-written stories by many award-nominated mystery/crime authors and a few essays about Arthur Conan Doyle and Sherlock Holmes' relationships with America is available from Skyhorse Publishing @
Kobo for just 99 cents and couponable (at least in Canada), if anyone's interested.
P.P.S. Here's a
modified search link which shows just the 20 books in The Further Adventures series which are specifically republished by Orbit's Titan Books imprint.