The highest contrast ratio of the Predator Z35 is 100000000:1. That's over twenty times the contrast ratio of a 5000000:1 PC screen, which is the most frequently found contrast ratio.
A 100000000:1 dynamic contrast ratio is in fact the best contrast ratio across all comparable spec PC monitors that have been available for more than a year.
Across comparable types of LCD screen the worst contrast ratio is Mega Contrast.
There are a number of alternative flatpanel monitors that have a 100000000:1 dynamic contrast ratio currently available that you might also want to look at including because of it's better review score, the Asus PB279 (£477.43).