Here you can see the US Air Force training with DCS and a VR headset, it is so realistic flying this way that it can be used for training purposes:
NOTHING is better than flying in VR. NOTHING.
Imagine how the awesome photorealistic cockpits of Flight Sim 20 will look like in fully 3D around you with perfect photorealistic scenery outside the cockpit windows…
edit:
Can a VR headset be tested or rented somewhere to know which one is best for PC?