The Institutes won the poll by 1 vote over Owen's vol. 6.
I voted for Owen's volume on Sin and Tempation. I would like to spend 5 years being laid bare and learning to battle indwelling sin in my life. I voted for Owen because I think it would make the most lasting difference in my life and ministry.
However, I could make a case for any of the 4 options, especially Calvin's Institutes.
The next poll is up. I can't wait to see who you vote for.