This reading 2 books at the same time has been great (2 because I haven't touched Sophie's World in these last few days. Trying to read 3 might have been overkill). The 2 books had a similar length (430 pgs. in one case, 467 in the other), so I could pace myself and read 50 pages of one, then 50 pages of the other. I'd stop even when I wasn't tired of the book; not in the middle of a scene maybe, but as soon as there was a break. I still like reading books in one seating, but for some books this methodology seems to work well.