Having read through just about all the VR threads (while talking breaks) I can't believe I tried to give you some advice, you seem to be one of the main contributors to the VR topics. In fact I've adopted some of the suggestions you have made in another thread.
I can however give a bit of feedback on some of the topics that I was concerned about prior to purchase and seem to be an issue for some users. So I hope this helps some people who may have some concerns.
Set up was very easy, after set up I used it for about 4 hours at which point I had to stop as I had a headache felt disorientated and nauseous. Went back to it the following day and did an hour with no issues. I have been gradually increasing my time and frequency with it on and now I can quite easily do a 2 hour stint with no affects other than I can't stop grinning. If at any time users start to feel the cold clammy sweats take a break as that is an early warning. It is very much a build up a tolerance type of thing rather than developing an aversion.
I have glasses, they fit OK with the HMD on, I can also do fine without them although my eyes do feel more fatigued when not wearing them. However I have been building up a tolerance to the HMD and under normal circumstances I never play for two hours straight, I have a tea and cake addiction so generally take a break after half an hour. So all in all, for me, all is good.
As far as clarity, what can I say. For me it is astonishing, never got my hover car but I have got VR then again I started playing video games when Jaws came out, the graphics more than meets my hopes.
Blacks, mine are sufficiently black. The bar that comes up when opening the mission board for example, is very black. The black of space is..... well black. I see no issues with the blacks. God rays, I have looked for them but to be honest I'm not sure what they look like. I have never seen anything resembling there description. I have viewed Henry as I believe some people say they are particularly prevalent at the beginning with the white on black txt, but I saw nothing out of the ordinary.
I am one extremely happy CV1 owner who luckily has not had any of the issues or problems others are/have been having. My system is as below, it was built with VR in mind.
I am using the in game VR High profile but with antialiasing off and super sampling at X2.0 DOF off. All gameplay so far has been in 2.1. If people have any question please just ask cos prior to purchase I had 100's
Win10
16GB Ram
i7-6700K 4.0GHz
Zotac GeForce GTX 1070 AMP Extreme Spectra
Corsair RM750i Power supply
Asus Z170 Pro Gaming Mobo
Corsair Graphite 780T case
Corsair Hydro H100i CPU cooler
and lots of white LED fans.