It strikes me that three of those are very... long. Now, I would be tempted to go for The Count of Monte Cristo because it's so long that there is an awful lot of good stuff in it. On the other hand, I gave up on Gone with the Wind because it bored me to tears, so maybe that's not the reason long books make the list. Perhaps it's just that they look impressive to have hanging around.

At the moment I'm very keen on Antony and Cleopatra, having just reread it. Depends on circs methinks.