I played DCS World in VR for 4.5 hours last night. I just got my OSVR HDK2 in on Monday. It has the same screen resolution and size as the rift and vive but has a true RGB panel, (50% more subpixels, better image for the same horsepower). It is also open source so will work will any controller (wii, move, kinect, etc.) I got it for $350.
It is AMAZING, if you have a VR device you NEED to fly this sim, and if you fly this sim you NEED to get a HDK2! I could do things like; make amazing long range gun kills (P-51!), pick where on the enemy plane I wanted my bullets to hit just by "feel" (P-51 fixed sight!), make buttery smooth landings on the center line EVERY TIME, fly under bridges, between guy wires, etc that I couldn't do very well or at all on a monitor! It is VERY close to the real thing, I would know, I am a pilot.