I've read Fandorin, and it's not bad. If someone liked it, I recommend reading "Pelagia." It's a very interesting detective story, and it's better written than the Fandorin books.
But mostly I read fantasy and classic science fiction – Harrison, Sheckley, Zhelazny, and many others. Of the fantasy books I've read recently, I really liked (I completely agree with L$K(joke)) Gareth. It's a series of excellent fantasy detective novels (about 9 books) with metallic titles; literally, each title contains different metals.
I don't like reading in public places, so I have Sudoku for those situations. I solve Sudoku everywhere, at any time of day, and in any quantity xD.