I read pretty much anything, from fantasy (City of Stairs by Robert Jackson Bennett) to romance (Bared to You by Sylvia Day) to classics (Heart of Darkness by Joseph Conrad). The only genres I don't read are self-help and comic books/graphic novels.
The best book I read last year has to be The Girl with the Dragon Tattoo by Stieg Larsson. When I read it and wrote the review I hadn't found GR, and so, my review is not what you'd call comprehensive. One day I'll go back and read it again (possibly before reading the sequels for the first time) and review it properly.
Parts of it were horrible to read, but I loved it. The rape scene and the torture scene were difficult to read, especially as my memory works way better than my imagination. I saw the American version of the movie first and so, was able to remember the very graphic way it was filmed as I was reading, instead of relying on my own imagination, which is not nearly as sadistically creative as the director of the movie. But all this made it a really gripping book to read. Larsson was a great crime/horror author, imagine what he could have written if he was still with us today.
If there was a second and third place they would have to go to Plague Town by Dana Fredsti and Darkfall (The Legendsong, #1) by Isobelle Carmody.