I can only keep up with one book at a time, unless it is Short Story September, then I like to have collections by a couple different authors going.
Also, I never got into ebooks. I have enough regular books to read for the next couple years, and I'm never so excited about a book that I need it right now. I mostly buy used books for $2-$3, and there is no used ebook store (that I know of). There is something I like about holding a normal book.