Oculus Go - 5/10 - great screen, some ok games, really only good for netflix and casual games due to 3DoF
PSVR - 6/10 - really great screen, lovely colours, some good games but low res, move controllers are shocking.
Vive - 6/10 - good at the time it came out but SDE is pretty bad now and wands are not really very good
Oculus Rift original - 7/10 - fit and finish isnt great but screens ok, the touch controllers were excellent though.
Oculus Quest - 9/10 - screen is great, controllers are great, hand tracking is showing promise, some amazing games making stunning use of the limited graphics, oculus link means its both rift s and stand alone really. Overall best all round headset for general gaming.
Valve index - 8/10 - Screen is stunning, index controllers are amazing, sound is amazing and still have no idea how they make it that good, loses out on FOV as it is like looking through binoculars, great binoculars but still. Build quality is great, fit is also very good.
Windows Mixed Reality - 3/10 - if you can pick one up for 100 quid it might be worth it else done bother, controller tracking is rubbish and the screens are poor too. Maybe the newer ones are better but controller tracking when it lost sight was terrible.
Pimax 5k BR - 6/10 - OLED screen was lovely for colours but SDE marred what was a great FOV, really was amazing to play fallout 4 and skyrim and feel like you where there.
Pimax 8k+ - 8/10 - The screen really is excellent, no SDE, maybe not as bright as the index and the hassle you have to go to with pimax render quaility and then the whole setting it up in steam with custom res and switching off Parallel projections makes that set up a hassle. Once you have dialed it in though, wow, the FOV with an amazing screen is breath taking. Build quality is much better than it was and the new face surround makes it incredibly comfortable, time will tell if long play sessions make it better. Sound lets hope for the MAS being great as well.
So what do I use most, well its the quest, put it on and play, starts up straight away, no messing about and its great to use.
What did I use the to play no mans sky, index, just a nice screen and comfortable fit but I did notice the binocular tunnel like view.
What will i use, well I have only played with it for an hour but the pimax 8k+ feels comfortable (and thats with the rubbish headstrap, the new face plate really does work well. The screen might not be as bright as the index but its got no SDE and that edges it I think.
Will report back in a few weeks if I remember.
Review 
Part 3