The G9 and G7 seem to suffer from the same problem that previous VA adaptive sync monitors had, i.e. brightness depends on frame rate, so the screen flickers with changing framerate.
In addition to that they seem to have some issues with their firmware trampling over its own memory, causing glitch artifacts and such. I suspect they'll fix that through a firmware update.
The EVE Spectrum[1]. I actually pre-ordered a while back, so got it for less than what it's priced at now. Their first project had some issues with delivery, but they seem to have done a great job with this one and I'm cautiously optimistic.