If subversion is already working ok then I guess there's no pressing reason to switch, but if you want to try something new, git (http://git.or.cz/course/svn.html) seems pretty cool so far (been using it for about a week). You can put the repository anywhere you want (e.g. your home directory) so you should be able to run it on any host. The fastest/easiest/recommended way is to just run it locally.