My favourite authors: (I am a huge fantasy fan, not the kid like fantasy but proper, we don't sugar coat this shit fantasy).
Terry Goodkind - Sword of Truth Series (it's like, 17 books long).
Trudi Canavan - She has written three trilogies and a prequel, as outlined below; a prequel, one trilogy that follows a couple of characters and a plot to reignite a war, a second trilogy that follows that persons Son and the attempt at keeping an uneasy peace, another trilogy set in a different world where 5 immensely powerful magicians get bored (as it were) and try to start a war between two different countries, the 5 magicians posing as deities from each country. The 4th trilogy, the 3rd book not out yet is set in a universe where travel between worlds is possible with magic and there is someone who is out to control each world in the books universe. (I suck at explaining things) but I try to keep things spoiler free.
Robert Jordan - Wheel of Time (it's 14 books long) and the world is huge, the scope of it and feel of it is something like Tolkien.