All I can say is the VR920 was a big disappointment. I couldn't even read gauges or the text buffer with it.
Mine now has a damaged cord and I haven't even bothered to send it back in for repair.
While the Wrap920VR might be an improvement, it would need to be a big one before I would try it.
The VR 1200 is supposed to be out next month. If anything, I'd wait for it.
852 x 480 doesn't seem a huge leap up from 640x480, but I don't fully understand all the native and scaled resolution lingo.
One thing that will be a big improvement is the independent +2 to -5 diopter focus adjustment.
That feature alone might have made the 920 usable for me.