As much as I love VR ED, forgetting about story lines and game features for a sec, I still prefer the VR immersion of XR over EDO. In my objective, quantitative, empirical, analysis, certified by Belgian University Logical Lessons Sterling Halls In Tienen, the cockpit feel of XR makes ED cockpits feel cartoonesque, when I switch back and forth between them. An Anaconda up close looks about the size of my forearm. A station in ED doesn't 'look' 100s of meters long, more like something I could stretch out and pick up by hand ( and I don't mean my giant green space hand ). However, In XRVR, stations, even just their components, seem much larger. I have no idea why, maybe it's just me. Of course once you've done a lap of the space highways in XRVR, you've basically completed the whole game.
NB: I did get X4 working in VR but there's no way my brain will buy it unless I'm already three sheets to the wind.