The Acer 193L has a maximum contrast ratio of 100000000:1. That's over five times the contrast ratio of a 20000000:1 flatpanel monitor, which is the most frequently found contrast ratio.
This LCD screen's contrast ratio (100000000:1) is actually the best contrast ratio across all LCD screens that have been on the market for more than two years.
A Mega Contrast dynamic contrast ratio is the worst contrast ratio across similar types of LCD screen.
It may also be worth considering one of the other PC screens that have a 100000000:1 dynamic contrast ratio currently available including a cheaper PC display such as the Acer B193 (£500.22) or you might consider a higher rated PC display such as the 176L (£89.42), or the 196L (£97.62) both from Acer.