at wesleyan there is a daily updated snapshot (faster than the one at sourceforge) by David Jensenius.
This is the recommended version currently.
http://supercollider.wesleyan.edu/builds.rss (RSS feed)
binary version (status is changing quickly (not really... about one in a month :)):
download a snapshot from sf
blackrain posts regularly updated binaries for older Mac machines and OS versions (10.2.8 up) at: https://sourceforge.net/project/showfiles.php?group_id=155616
windows, os x and linux binary download from sonenvir: http://www.sonenvir.at/downloads/sc3/