The Asus VE198 has a maximum contrast ratio of 50000000:1. That's over two times the contrast ratio of a 20000000:1 PC monitor, which is the most common contrast ratio. The worst contrast ratio of all small monitors that have been on the market for a comparable time to the VE198 is Mega Contrast and the best is 100000000:1.
Alternative flatpanel monitors that have a 50000000:1 dynamic contrast ratio currently available which you might also want to look at include the AOC E2060 (£74.88) which has a better Rating.
If you want a PC screen with a higher contrast ratio then you might also want to look at the Asus VS207 (£79.32) (80000000:1) which is also cheaper.