There are so many books and authors that I have heard about and haven't yet read, that I pretty much read randomly what appeals to me at the moment.  When I browse the shelves I see enormous numbers of additional interesting titles that I wish I could get around to reading, based on title and subject alone, so that doesn't make narrowing it down any easier.  Only among detective stories will I read all of an author's books if I like him.  Among classic authors I tend to want to read another book by a different author, instead of a second one by the same author, in order to get broader coverage I suppose.  If I could, I would read 'em all!  Maybe all the authors first, 
then all the books.  Dreams, dreams!!! 

Peder