Accel World is good. Created by the same person as SAO. The anime leaves off at about book 4 of the light novels, but if you finish the show and want more, the first 9 light novels are out in english. I'd recommend reading all the books after the anime, even though the plot of 1 through 4 was used for the show itself, simply because the books have more content and things they couldn't reasonably fit into a 30ish minute episode.
"Everyone is searching for a world where they belong. A place of light, free of falsehood. We are on a never ending journey to reach that world." -Tsukasa Kadoya