Vizioncore has released a number of product demonstration videos to help would be buyers make up their minds.  If you aren't sure what these products do from their Web site desciptions, check out the following videos for more clarification.

esxCharter:
http://www.vizioncore.com/Videos/esxCharter_SC.html

esxMigrator:
http://www.vizioncore.com/Videos/esxmigrator_SC.html

esxRanger Professional:
http://www.vizioncore.com/Videos/esxrangerPro_SC.html

esxReplicator:
http://www.vizioncore.com/Videos/esxReplicator_SC.html