I own the
Epson Moverio BT-300 glasses and would not recommend anyone buy them because they will be able to fly VLOS. After inserting the darkest shades
(which are really needed in normal daylight conditions), I found it's impossible to see anything but the screen in the glasses. Lighter shades might give you partial VLOS, but it'll then be tough to see the DJI GO app.
As for a comparison between those and the
DJI Goggles, it's definitely like comparing apples and oranges. If I could only buy one, I'd take the
DJI Goggles. The picture is larger, easier to see, they are wireless, easier to setup, the picture is not blurry in the corners, they are much less expensive, the built-in app is easier to navigate, you can use a mobile device running DJI GO at the same time... it's really no contest. The only real con is the size/portability of the
DJI Goggles.