Started using my Rift S again after using CV1 and boy did it take steps back in a number of areas. 
>Colors worse
>Black levels worse
>Controller build quality worse (battery cover doesn't fit quite right on one controller and both controllers have battery jiggling around when I dance)
>Vertical FOV much worse - possibly the biggest downgrade
I'd still get one instead of a CV1 but for a successor it's really poor. Also I've noticed that VRChat drops stick inputs. It seems inputs are tied to performance. The lower the FPS, the less likely my stick input is to register. Also flicking the stick to input on the radial menu seems to fail unless I hold it briefly, (despite the visual showing the stick moving), so that's pretty fucked up.