I don't own a CV1 but I have used it and I would say the improvement is significant and I expect cockpit displays and hud clarity to benefit from the 1.7x pixel increase.
Besides better visuals, it is very comfortable and I forget its even on.
The sound quality is great (coming from someone with Hifiman phones, Lyr 2 and multi-bit dacs).
The tracking is flawless and spot on, the Halo demo was a good at displaying the accuracy, it feels one to one with your movements and wielding the dual smg's felt like they were actually in your hands, blown away by this. Walking and movement was perfect.
The installation is easy as can be, plug in the hdmi and usb 3.0 cable, done.
Once support releases, it will be the highest fidelity headset on the market.