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The first I can see is that the hololens is self contained (no wires to computer), where this looks like its tethered to a computer

edit: and the FOV looks way bigger on the meta than the hololens

One is backed by one of the largest companies in the world and another is a startup. You'll definitely get your HoloLens, but you may not get your Meta 2 (scheduled in Q3 2016, but you know how that goes).

Competition is great though, hopefully they will push each other.

Yes, seems like a tough field to be in. You're up against not just HoloLens, but Magic Leap, which appears to be even scarier competition. Good luck to them, though.