I don't know about the other devices, but the hololens is incredibly underwhelming when used. The marketing CGI for it is the best thing about it. I suspect that is probably true also of the magic leap one.
Have you actually tried it? I know some of the developers and creatives that have worked with it, and they say it's more impressive when used in person than it looks in the 2d promo videos, which is the opposite of most devices.
I have tried it in person; and it was overall disappointing. This was some time last year so maybe they've improved in the mean time but the AR overlays weren't particularly compelling and the FOV was terrible.
I also felt the tracking was mildly worse than Vive; although that is more anecdotal.
I did the Mars demo at a conference a while back - the first couple of minutes I was underwhelmed, but at some point, my brain "bought-in" - I noticed this when I crouched down to look under a virtual rock outcropping without a second thought.