If you care what is beating out the DCS Vivaldi, check the following urls. A single box against the four-box DCS.
http://www.audioexotics.hk/index.php?option=com_simplestforum&view=postlist&forumId=1&parentId=10845&topic=true&Itemid=
http://www.trinity-ed.de/typo/index.php?id=12&L=1
http://www.audioexotics.hk/index.php?option=com_simplestforum&view=postlist&forumId=1&parentId=10845&topic=true&Itemid=
http://www.trinity-ed.de/typo/index.php?id=12&L=1