My list of HC buy-now authors ist quite short as I don't usually buy hardcover, but here it is:
Ryk E. Spoor
John Scalzi (looking forward to my limited edition of "Your Hate Mail Will Be Graded"

)
Steve Brust
Jim Butcher (Dresden novels - not so sure about the furies books)
Charles Stross looks like another likely candidate

- loved Glasshouse and I first have to get all the backlog
I love Terry Pratchett but prefer his books as audiobooks. Still gotta have the paperbacks