I have not heard any of the DAC's you mentioned. However, I think you should add the Trinity Supreme DAC to your list to audition as people have replaced their Vivaldi's with the Trinity DAC. You save on cables too with the Trinity DAC. Please read the link below about the Trinity and the DCS.
http://audioexotics.hk/index.php?option=com_simplestforum&view=postlist&forumId=1&parentId=10845&topic=true&Itemid=53
http://audioexotics.hk/index.php?option=com_simplestforum&view=postlist&forumId=1&parentId=10845&topic=true&Itemid=53