The HP Z27x has an LCD display type which is better than the LED display type found on most similar spec PC monitors that were released around the same time as it.
This PC display's display type (LCD) is in fact the worst display type across all PC screens that came out in the last 12 months.
The best display type amongst comparable types of PC display is LED.
We compared all the other PC screens that have an LCD Display to this LCD screen and we think the Benq XL2720Z ($263.99), the AOC Q2781PQ, and the Lenovo X1 ($61.99) which has a better Rating is also worth considering.
If the display type of this flatpanel monitor is too bad for you then you might also want to look at the Eizo FORIS FS2735 (LED and higher rated).