The 221S6QYKMB has an LCD display type which is better than most PC monitors of a comparable type and age to it. Most medium monitors that were launched around the same time as it have an LED display type.
An LCD display type is actually the worst display type amongst all PC displays of this age and spec.
The best display type amongst similar types of flatpanel monitor is LED.
Alternative LCD screens that have an LCD Display currently available that you might want to consider include the Acer G246HLF (£109.99) which has a better Rating.
If you would prefer a PC display with a better display type then you might want to look at the HP Pavilion 24cw (£139.97) (LED), the Lenovo T2424z (£194.93) (LED), or the LG 22MB37PU (£125.98) (LED) which is also cheaper.