 <p>Some more fair questions might be:</p> <p>Are new repositories being set up more in SVN or CVS?</p> <p>Are repositories changing more from CVS to SVN or the reverse?</p> <p>The overwhelming answers, as far as I can tell, are that many more new repositories use SVN than CVS, and the migration is all from CVS to SVN.</p> <p>There are arguments for keeping CVS if you already have it, but for virtually any other case I'd recommend SVN over CVS, and so would most of the people who use either heavily.</p>