*curtsies* I know your general feelings on YA but I think you might enjoy Megan Whalen Turner's series of books (which her fans have named The Queen's Thief but that's an awful name really). She's a brilliant worldbuilder, (one of the best I've ever read) and her world has a very Ancient Greecian/Byzantine flavor. Plus, there is major snark. I can't really hazard a guess about your tastes - outside of upmarket fiction of course - but I think you would like these books.
*Curtsies* So, book recs really aren’t for me personally–I currently have 841 books on my TBR list already and if I took every suggestion people sent via Tumblr it would get really out of hand really fast. But I appreciate the rec! And I am sure some of my followers will definitely enjoy this.