Well a lot of my favourite books seem to be written by men ... BUT I take into account that I like Harry Potter, another author I absolutely love is Cecilia Dart Thornton - and I am reading Jo Graham. The next lot of books I will be buying are going to be female authors.
For me its fifty.fifty I think.
Frances Hodgson Burnett wrote Secret Garden - one of top ten of all time fave reads.
E Nesbit wrote my third favourite book of all time - Railway Children
Jane Austen wrote Emma a book I adore and will re-read soon.
Daphne Du Maurier wrote Rebecca a book I've read five or six times since I first read it as a teenager.
Then I love Charles Dickens, John Le Carre, Sebastion Faulks, C S Lewis and J R R Tolkien.
It all depends on genre. I think women are better at writing love stories or stories with real emotional depth.
Men are better at writing crime and thrillers.
So, for me, yes, fifty/fifty, depending on genre and what mood you're in.
And just to say: When Pride and Prejudice first came out a man was waving it around in front of a group of people and said, with authority: "This book is too clever to be written by any other than a man!" Janes brother was there and he declared loud and proud: "My clever sister wrote that!"
That ends my argument.