Tested the Mi 34 for couple of hours, it is an incredible screen. Bought it on the official Mi tmall site, shipped here via ezbuy sea.
The resolution and real-estate is awesome for productivity, multiple excel/PDF windows open side by side. Colors are good, just losing slightly to an IPS and ultra-wide gaming is incredibly immersive. I came from a Dell ultrasharp 27 IPS. 27" 60 hz -> 34" 144 hz is an insane difference.
I was concerned about the curved screen at first but it's actually more comfortable for the eyes, especially at this size and viewing distance. I can maintain the same viewing distance i did with my old 27.
No noticeable black smearing on the Mi VA. Build quality on the panel and stand is well done. No panel flex, solid rigidity, the plastic materials used have that Apple-quality of finesse about them, which runs across a lot of their other products as well. I think xiaomi's economy of scale generally helped them maximize their products' build quality, punching way above their price point.
Honestly if you didn't know how much the mi 34 cost, you would think it's a 1k monitor. Overall at <$600 this is a mind blowing bargain. Hope this mini review helps some of you.