Can you tell me which one of these books is the best? Thanks.?

I've read "The Jungle" and "The Grapes of Wrath" and I enjoyed both of them. Of the two, I'd choose The Grapes of Wrath. "The Jungle" is very realistic and vivid, but the final chapters sound like a political harangue, and spoil an otherwise excellent novel - which, incidentally, is based on historical fact.