Google Daydream is a bit better. With the nice fabric and straps it takes about 1-2 minutes before the intense head pain starts. Not only is it insanely heavy and makes any experience hurt my neck, but also, it hurts my nose too! (I do wear glasses, but each of these products says that it doesn't matter and that glasses-wearers can use VR too. Not sure if that is a lie or if this affects non-glasses-wearers just as much).
Additionally, the content available in the Play Store is not of great quality, in my opinion. The paid content is also a mess, not just the free stuff. There are some neat games, but they don't work well (lose save state, etc) and everything hurts physically after 1-2 minutes on a $100 system.
I'll wait many many years before trying to purchase again. It feels like the '80s VR rush all over again, where actually using the product falls so far short of the expectation that I'm disillusioned.
It's true that I have not yet tried a "Full VR" system - but they have been too expensive so far and I am not certain that they would be any less awful of an experience for me to use.
Do other people have the same head pain issues as I do? I would certainly expect that the decline in sales is mostly to do with people finding out that actually using VR isn't very fun (yet).
Edit: I bought a $10 game, Eclipse I think, where I have had to play the same intro level to the game like 8-10 times, because my nose hurts so much that I have to take a break. But you can't take a break or you lose your save state (I have spent more time than I would like to admit trying to find a way to save the state, this game looks super neat). But now if I want to play this game I paid $10 for, I have to play the same sequence again and again, and try to finish before the nose pain is unbearable. At this point, I am losing interest in the game despite its amazing reviews and my previous intense dedication to playing it.