I like both to read and to listen (these terms are now so loaded, I don't know how to phrase this without offending someone!
). With a lot of books, I'm agnostic between methods. Price or library availability is probably as important a factor as any, although very dense history is probably best consumed in print. However, equally there are certain types of books and series where my preferred method of consumption is audio and I won't read them if I can help it.
Audio standouts for me include Patrick O'Brian's Aubrey/Maturin books, Bernard Cornwell's Sharpe novels, P.G. Wodehouse, and Victorian novels in general. This last I'll read, also, but I've been listening to a lot of them this year and it's been sheer pleasure. I admit that I'll also read Wodehouse if the narrator isn't one of my preferred ones, but I'd much rather settle in with Freddie Davidson as he reads him to me (or Simon Vance).
So, what are your "even better in audio" books?