In 2020 there are many options for VR hardware. My personal preference are standalone headsets as I prefer the freedom and don’t need to worry about tripping over wires. I also believe that this leads to greater freedom with designing applications for VR as it does not restrict the movements of the user. Because of this, I am choosing the Oculus Quest as my favourite VR headset. The Oculus Quest uses outward-facing cameras to provide 6DOF motion tracking, and uses Oculus Touch motion controls. Combined with a faster Snapdragon 835 processor makes this VR headset incredibly immersive.
In terms of choosing my favourite MR headset it would definitely be the Hololens 2 (assuming that money wasn’t an issue). I have had the opportunity to try out the Hololens when it first came out and I was in awe. It seamlessly blends real life and computer generated graphics and had so many useful applications. This version is even lighter, a custom AI chip to improve performance and has a wider field of view so I think it would be even more impressive.