I have recently read both the favorites - 1984 (re-read) and Little Brother - so my vote goes to Down and Out.
I'm gonna read it -
and also Looking Backward - regardless of the result of the poll, 'cause they both look intriguing. The MRBC choise isn't always bullseye - I didn't bother to finish last month - but I enjoy very much the way I get ideas and inspiration towards new books...