I purchased this monitor to replace a BenQ PD3200U that shipped with a faulty DisplayPort input. So when I plugged this monitor in, and it worked out of the box, I was relieved. Colour and brightness calibration seemed comparable, but not quite to the same level as the BenQ - but good enough for my purposes.
However, I quickly noticed that the outer ~10 pixels of the monitor had viewing angles that made them fade to black if my head was closer than 40 cm to the monitor. This means that if you crane forwards to focus on a detail of your screen, border details such as scrollbars start to disappear!
After working with Viewsonic support, I was advised this is by design - which surprised me given the target market for this product being detailed focused professionals.
Unless you plan on never having your head closer than 60cm from your screen AND you require professional grade colour / brightness reproduction - I cannot think of a scenario where this monitor makes any sense.