I read his first novel, A Game of Thrones, and loved it. Had the start of a really great story. I read Clash of Kings and still was happy with both books. But then came A Storm of Swords and things started to read like Robert Jordan. I read A Feast for Crows and was thoroughly disgusted. Total trash of a novel unless you like Robert Jordan type writing. That whole book, Feast for Crows, could have been condensed down to a couple chapters. What happened, though, GRRM strung his "story" out to two novels: Feast for Crows and Dance with Dragons. In Feast for Crows, he tells the stories of the secondary characters and what happens with them. Dance with Dragons is supposed to be about the same time period, only covering the main characters.
Sorry, but GRRM lost me as a reader with the last two books. I won't be reading Dance with Dragons.
I'd recommend The Night Angel Trilogy by Brent Weeks instead. Much better than GRRM's last two novels. IMO, anyway.