Question How is this build

Viewsonic is TN panel and it has 1ms response time. Color wise, it's the worst of all other panels where colors may look like washed out and it's viewing angle is also the worst. Despite that, TN panel monitors are best in fast-paced (competitive) gaming.

LG is IPS panel and while it has 4ms response time, it's colors are the best of all other panels. Also it's viewing angles are also very wide. Due to that, IPS panel monitors are best for graphical design, movie watching and slow-paced gaming.

If you want best performance (shortest response time), go with TN panel monitor. But if you want best image quality, go with IPS panel monitor.

Here's also a short video to watch:
View: https://www.youtube.com/watch?v=zNc2fKuVnGU