After working with a few years with VSS & CVS, SVN was a welcome blessing, even though it is not perfect. I've been looking into mercurial myself, and also tried using Git but installing TortoiseGit was a PITA; on the other hand, TortoiseHg was much faster to install, plus it seems to have better IDE integration (I consider that a must for VCSs) (I tried in Visual Studio but not in Eclipse yet - seems that there is a Git plugin in development called EGit, it may be worth a try).

I'd rather have my co-workers and me work with a command-line-only subversion than the f*cked-up mess that is AnkhSVN. Anything that goes beyond "This is my project, I want all the files in it to be versioned, and I'll never move them" is often too much for it to handle appropriately.