Its a great $199 standalone HMD. Battery life is quite short. CG content is poor. This is one of the main limitations of Mobile HMD. I wish it used USB-C instead of Micro USB.
8K 360VR and 180VR is great. Unfortunately there is not so much today. The majority is 4K or lower resolution. IMHO 360VR and 180VR at resolution lower than 4K is unwatchable. Even 4K is poor.