Trusted Reviews looked at the Viewsonic VP2130b 21in Monitor. It has a diagonal viewing area of 21.3in and a native resolution of 1,600 x 1,200, making it a perfect replacement for large 20in+ CRT screens:

I had high hopes for image quality on the VP2130b and my first impressions were good. From the off it looked like a very bright screen with excellent sharpness and colour purity, looking even better than the Dell 24in. Investigation further with our DisplayMate tests showed this to be true. The colour banding test that caused some problems for the Dell 2407 24in were entirely absent, with the Viewsonic showing how it should be done. Colour purity was essentially perfect, with even and rich colours across the whole of the screen. Grey scales and colour scaling were also fantastic, with even stepping and everything visible right to the end without compression.

This was evident when viewing actual images. On the Dell, detail seemed missing in darker areas, whereas all was clear on the Viewsonic, giving some justification for its quoted contrast ratio of 1000:1. For video though the Dell seemed to have the edge. As ever, there were no discernable issues with response time, with 8ms (grey-to-grey) quoted, but the screen was slighly less bright and vivid.

For gaming performance I tested with a bout of Counter-Strike: Source and found the screen performance to be perfectly smooth. However, if gaming is a high on your list, then spending extra to get a 24in widescreen display would be worth considering. The Viewsonic then is a touch more suited to the professional environment rather than entertainment and also offers corporate friendly features such as software than enables IT departments to asset manage. Image quality is first rate, and the features are good. Of course, for around £130 more you can get the 24in Dell but if colour accuracy and contrast is paramount then this is a better choice.