I received my Wasabi Mango QHD275 Supreme yesterday. The screen is glossy (felt the need to mention this as no where else, not even product description explicitly states if it is glossy or matte)No dead pixels however there is a small area (maybe 1mm) in the upper right corner where some of the pixels are either slightly darker, or there is a bit of a smudge on the inside of the glass. The pixels are not dead as they react and change color and I inspected under a microscope, just a slight annoyance which is quite frankly only noticeable if you are looking for it.. There is a small amount of light bleed on the top of the panel when the lights are off and the screen is solid black. The blue is a bit strong on native 6500K and I needed to turn the blue gain down from 50 to 40 just to balance out the color correctly.
The base feels more sturdy than the Shimian QH270 alternative, of which I was comparing directly to (colleague has this and we did a side by side). The housing that the panel comes in is quite nice, though the little bumps near the bottom are a bit odd and the logo is ridiculously huge and in your face. I actually like the logo, but my coworkers feel differently. Whites are very white, blacks are very black. The speakers suck and sound incredibly metallic, but we don't buy these for the speakers, so who cares?
The On Screen Display (OSD) feels a bit cumbersome but does work, I noticed that it is much more responsive using the remote that the screen comes with. The PIP feels like a gimmick as if it were a bar TV and I don't ever see a use for this, unless I hook up a chromecast and decide to watch netflix in the bottom right of my screen while working on my main screen

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An annoying little feature with Mac was I needed to force an EDID profile while using the mini display port to display port cable. This is unrelated to the monitor, however took a couple hours to figure out. This was necessary as the Mac was treating it natively as a TV and washing out colors really badly, over-sharpening everything, and pixelating some stuff. After forcing an EDID profile for RGB only, and then calibrating, the problem is fixed. Also tested the Dual DVI port, which works perfectly without intervention.
Would I recommend this screen? Absolutely. It's currently the cheapest on the market with a Display Port. Overall rating: 9/10