Review on VIOTEK Reaper RFI25CBA Extreme Gaming Monitor 24.5", 1920X1080P, 144Hz, Adjustable Tilt, Adaptive Sync, Frameless Design, Pivot Function, HD, IPS by Terry Pavelko

It's not a bad monitor, but it has a very poor top-to-bottom contrast gradient that I found unbearable. I bought this monitor to use as a portrait monitor. So when I rotated it 90 degrees, the contrast gradient was left to right. As I moved my head from left to right, I could see the left/right side of the screen literally turning white/dark yellow. I couldn't help but notice this when using the monitor so I had to return it. I don't think a monitor that advertises portrait mode should have such obvious contrast issues.