Anything that is well written and has a decent plot. Erotica is ok as well. I do prefer a good romance, but given the jaded cold, cold hearts here, I guess I will hope for the best.
It’s a bit dated, but Darker Than You Think by Jack Williamson is the first book that made me understand the allure of shape-shifting, from the shape-shifter’s POV.
The datedness isn’t in theme, but in practical stuff, like women wearing furs, people getting off a plane by way of those mobile steps, cocktails, smoking, cheap by today’s standard New York apartments. No cell phones. 
They’re a bit light, but I’ve liked Melanie Jackson’s paranormal stuff. There’s romance. Anne Bishop’s paranormal Black Jewels trilogy is definitely erotic.
(Apologizing in advance if this double-posts – I keep getting timed out.)
John Campbell’s, Who Goes There? is a good early source (and has twice been made into films).
My first published short story, “The Munij Deserters,” had telepathic shapeshifters.
No cell phones?
Oh. the.horrors!
Sorry, carry on.
Kim Harrison’s books are great. Good plot and fun interaction with the characters.
I just started Charlaine Harris’ Sookie Stackhouse books. A woman who is telepathic and a vampire meet up and fall in love. Vampires are legal citizens. Sort of a lighter Laurell K. Hamilton.
For fun vampires with a twist, Lyndsey Sand’s Argeneau Vampire books are light and romantic. Single White Vampire, Love Bites, Tall, Dark and Hungry and the newest A Quick Bite.
MaryJanice Davidson has a stand alone Derik’s Bane that is about werewolves. She also does the Undead and… books about Vampire Queen Betsy Taylor. Oh and her YA book Jennifer Scales and the Ancient Furnace is about a family of weredragons.
I haven’t read them but have heard good things about Kelly Armstrong’s Women of the Otherworld books. Werewolves, Witches and others.
I’m actually in the middle of a series: Julie E. Czerneda’s Beholder’s Eye, Changing Vision, and Hidden in Sight. No erotica and it’s strong on plot.
Octavia Butler, “Wid Seed”