Hololens- Hololens cost alot of money, they are 3,000. There was about 50,000 hololens sold. The colors of a hololens is black and it goes around your head. The hololens came out is march 30, 2016.

Oculus Rift - Are very expensive to get. They started selling them in the 2016 , and now they sell them for about 600 dollars. There are a lot of good games on the oculus rift. For example, Echo combat, Lone echo, Wilson's Heart, and more. By the end of 2016 there was about 800,000 Oculus rift sold . You can also watch movie and videos on the oculus rift.