Cloudminds is pretty strange, bet you didn't know you'll have your own Household Robot in 7 years...(I get the need for the best displays for "prolonged immersion". Not quite getting the connection with "Virtual Assistance and Humanoid Bots and VR"

Immerex, a pioneer in virtual reality, recently announced one of the world's lightest portable VR headsets, with one of the highest resolutions and lowest latency on the market, creating the most comfortable immersive experience by reducing motion sickness during long-term immersion in virtual reality environments.  Immerex holds the vision to br/ing virtual reality – the last screen for entertainment – to everyone's life and enhance the entertainment experience to a whole new level. 

http://www.en.cloudminds.com/about

http://www.en.cloudminds.com/collaboration-to-result-in-native-v