On the SVN Windows binaries download page, there are a few to choose from:

<http://subversion.tigris.org/getting.html#windows>

Are there pros and cons to the different versions provided by the different organizations?
Is there anything I should look out for?

Mainly, I just want something free that I will be running off my Vista laptop. Then I will probably do backups of the SVN files from time to time to an external hard drive.