Richards said:
If Gene Wolfe isn't your cup of tea, I also highly recommend Jack Vance. Try picking up his "Dying Earth" series (Tales of the Dying Earth, Eyes of the Overworld, Cugel's Saga, and Rhialto the Marvellous), or his "Lyonesse" series (Suldrun's Garden, The Green Pearl, and Madouc). The former is the basis for D&D's "fire-and-forget" magic system (and shows the basis for ioun stones), while the latter is more Arthurian.
Funny you should mention Jack Vance. I just bought (several months ago)
Tales of the Dying Earth. I've read some of it, but haven't gotten very deep into the book yet. I tend to read slowly and read several books at once. Besides Tales of the Dying Earth, I'm currently reading
Ship of Magic by Robin Hobb (almost done),
Swords Against Death by Fritz Leiber, a book called
A History of the Vikings, and 4 or 5 RPG books.
I'm planning on getting the next book in the Liveship Traders series which will eat up about half the gift card, but would like another fantasy novel that would be good read on its own. Also, the book I do buy probably won't get read right away. I'm eager to start reading
Foundation's Fear by Gregory Benford.
FYI... other fantasy/sci-fi (and historic fiction) books I own but HAVE NOT read yet.
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Domes of Fire (hc) and
The Sapphire Rose (hc) by David Eddings*
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The Riven Codex (hc) by David & Leigh Eddings
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King's Dragon (hc) by Kate Elliot
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Star Wars Specter of the Past (hc) by Timothy Zahn
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The Waterborn (hc) by J. Gregory Keyes
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The Dark Elf Trilogy Collector's Edition (hc) by R. A. Salvatore: I've read a little of this but got away from it. It didn't grab me as much as I had hoped it would.
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Four Past Midnight by Stephen King*: Not my style. I couldn't even sell this book.
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Shadowsinger (hc) by L.E. Modesitt Jr: Last year's Christmas gift from my sister. I haven't read any of this authors other books so it's not on my "must read" list.
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Treasures of Fantasy by multiple authors
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Caesar (hc) by Colleen McCullough: A book I bough for my father for Christmas one year. He read it, loved it, and let me borrow it back. Still haven't read it.
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The Demon Awakens (hc) by R.A. Salvatore
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The Lord of the Rings by J.R.R. Tolkien: I bought this before the movies came out, tried to read it, and failed miserably. Now that I've watched the movies, I want to take another crack at this one, eventually.
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Chimera by John Barth**
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The Rise and Fall of a Dragon King by Lynn Abbey
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Nightfall by Isaac Asimov & Robert Silverberg
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Fahrenheit 451 by Ray Bradbury**
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Ender's Game by Orson Scott Card**
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The Faded Sun Trilogy by C.J. Cherryh: Not sure where this book even came from.
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Neuromancer by William Gibson**
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The Kingless Land by Ed Greenwood
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Legacy of Steel by Mary H. Herbert: I started this once but got distracted by another series of Dragonlance books. (The War of Souls, I believe.)
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Brave New World by Aldous Huxley**
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Swords in the Mist,
Swords Against Wizardry,
The Swords of Lankhmar,
Swords & Ice Magic, and
The Kinght and Knave of Swords by Fritz Leiber: I got lucky in finding all these books. My goal - read 'em all.

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Spectre of the Black Rose by by James Lowder & Voronica Whitney-Robinson: I attempted this one a while back but switched to reading
I, Strahd.
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The Crystal Shard by R.A. Salvatore
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MacBeth the King by Nigel Tranter: Another borrowed book from my dad.
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Dragons of Autumn Twilight,
Dragons of Winter Night, and
Dragons of Spring Dawning by Weis & Hickman: I've read nearly half of the first book (forgot that) but haven't gone back to it for some reason. Oh well, it won't be hard for me to pick up again, as I already know the story fairly well.
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The Fires of Heaven,
Lord of Chaos, and
A Crown of Swords by Robert Jordan: Sigh, I don't know if I have the energy to try these again.
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Wizard's First Rule and
Stone of Tears by Terry Goodkind: I'm hesitant now, wasn't when I first bought them.
* A book that belonged to a friend who moved north and left it behind. It eventually came to me.
** A book my sister simply gave to me.