This is an excellent monitor. Since it is Full HD, it may look slightly less sharp compared to 4K monitors in the same price range, but the image quality is more than sufficient. I had seen some reviews claiming that the picture quality was not worth the price, but that was not my experience.
The fact that it supports touch and the Surface Pen more than makes up for those drawbacks. The only disappointing points were that the eraser function did not work when flipping the Surface Pen upside down, and when using it as a third monitor, touch input was detected on the second monitor instead.
Overall, aside from being very expensive, it is outstanding.