Author Inquiry

There are some books I look at every time I go to the bookstore but for some reason, I never purchase them. The stories sound intriguing and/or fun and the covers catch my eye. I'd appreciate any feedback I can get on the following authors and their books:

1. Randy Alcorn
2. Laura Childs
3. Ted Dekker
4. Ken Follett
5. Phillippa Gregory
6. Brian Jacques
7. Donna Leon
8. Jodi Picoult
9. Lisa Scottoline

Thanks for your thoughts!