I don't know for sure number for Acer (it just says:
Acer 18.5" LCD Monitor
Crystalbright with DVI Port)
As for Samsung, the description goes like this:
Samsung 17" LCD Monitor (733NW)
15000:1 Contrast Ratio
I was told the contrast ratio for the acer is 10000:1.
As for other suggestions, suggest me some more please. I hate Dell and Toshiba. Others will work for me. Thanks