Oculus vs. Vive vs. Lenovo vs. Pico: a standalone VR headset comparison

Standalone headsets represent an enormous leap forward for VR technology, with companies like Google, Facebook and HTC early to market.
An all-in-one VR headset, or standalone, puts everything in the headband needed to convince you that you’re in another world. It is a single integrated piece of hardware, like a phone or tablet.
The first VR headsets available to consumers require multiple pieces to work. This includes Rift, Vive, Gear VR, Daydream View, Cardboard, PlayStation VR and Windo