One of the interesting things about the Asus VW198S is that it's one of the few 19" LCD displays on the market with a 1680 x 1050 pixels resolution. The VW222S and VW222U are 22" models with a 1680 x 1050 pixels resolution.
All three models have a 300cd/m² brightness, 3000:1 contrast ratio. The 19" display has a 5ms response time, the 22" models 2ms and the difference between the VW222S and VW222U is that the later one support HDCP.
Currently the displays are only available in Taiwan.