The Asus PB277Q has an LCD display type which is better than most flatpanel monitors that have been on the market for a comparable time to it. Most similar spec PC screens 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 medium monitors that came out around the same time as the PB277Q.
An LED display type is the best display type across similar types of PC monitor.
Alternative PC monitors that have an LCD Display currently available that you might want to consider include the Acer XZ271 which is cheaper; or the Benq XL2720Z ($250.00), or the AOC Q2781PQ which has a better Rating.
Flatpanel monitors with a better display type that might be worth looking at include the Philips 258B6QUEB (LED), the Wortmann AG 2255W (LED), or the Acer GN276HL ($275.96) (LED) which is also cheaper.