It’s a bit of a hobby of mine to investigate wearables for HUD purposes so I have tested Engo 2 among others I would mention that something neat about Active Look’s is they publish all their Bluetooth protocol and have open source libraries to interact with their glasses.

I don’t have a pair of these Solos glasses (yet) but it looks from specs their resolution and display quality is much higher compared to Engo 2, obviously because it’s an actual microled display not prisms or waveguides.