For my favorite 'para-authors' I have to go with the old standbys of Steven King, Charlaine Harris, and Jim Butcher.
King was a poineer, and while I don't think his new stuff comes anywhere close to where he was (especially the Bachman books), classic King still gives me chills. "Carrie" is probably the best representation of his work I think. You can tell from the first time reading it that the characters are well thought out, the super-natural abilibies of the main character are well researched, and the dialoge seems effortless. Classic King will always rock my world.
The world that Harris has created is a beautiful one. Each character is interesting, and beautiful, and flawed, and... perfect. Now, admitedly, I like the Lilly Bard books better than the Sookie Stackhouse ones (and if were going into total honesty, I have to admit, I'm kind of digging on the changes that the TV show has made), but the Stackhouse world is amazing. The sheer number of supernatural creatures that she's not only represented, but created 'quirks' for. I think I most love Claudette and Claude.
Butcher I have to say I love just because of Bob. I love Bob. The TV show ruined the books for me. I think I like that Butcher shows through his books, that just because someone is paranormal, dosn't mean that their life is easier. Dresdin has just as much crap as the rest of us and then some. Most people just have to worry about making the mortgage payment. He also has to worry about a demon attacking him while he walks across the street.
Oh, and I have to say I like Nichole Bennett too. **ahem** "Every word she writes is art. I love it. It's better than Cats, I'd read it again and again." Ok, just kidding. But honestly, from what I've read of "Ghost Mountian" it's amazing. I can't wait till she finishes it!