Thanks. 350g sounds quite heavy, but then I was wimpy about 3D cinema specs until I actually wore a pair through Prometheus and had no trouble.
It's actually pretty light - the strap over the top of your head, with the two side straps do a very good job of distributing the weight - it puts no pressure on your nose and is fully supported by the straps when you have it adjusted correctly.
Another thing I was wondering about OR, which maybe our resident expert can comment on, is whether there's a big disconnect between the visuals and the sound...
Not really, but it depends if the game is using positional audio or not and what sort of headphones you're using. I use Logitech G35s and G930s exclusively, and they both support 7.1. For the stuff I'm doing in Unity, the audio position is more or less correct within the space - or it at least appears that way. Same with gaming.
You tend to be less bothered about the audio though as you're focused on the visuals - the need for proper positional audio is slightly reduced.
i.e. if something doesn't look right, you instantly have a disconnection with the VR environment - scaling/motion etc. The visual input doesn't mesh with what you'd expect, and that makes it wierd.
With audio, you tend to be less bothered - the visual medium and the enormity of the visual input tends to overwhelm any audio perception you might have.
The more time you spend in VR, the more accustomed you get however, and I think after a period of time you'll appriciate the positional audio more - but for now it's not a deal breaker when compared to the visual adjustment which is what most people will find disorientating.
I'm not sufficiently up on positional audio these days to know if there are any decent headphone type/software solutions. I spent a year doing it at Uni, but that was circa 15 years ago, and that ultimately comprised of putting a load of speakers in a circle and having some spaghetti mixing desk wiring to make it work. Or playing with positional algorithms in Csound on NeXT machines - but that was largely rubbish to be honest.