Monitors have come on in leaps and bounds over the past few years, principally thanks to the development of TFT (Thin Film Transistor) screens. In fact, it would be rare now indeed to see a PC bundled with a CRT monitor.

Screen size has also increased with 17" being the current usual smallest size. Many systems now come with a 19" screen with a resolution of 1280 x 1024 and larger screens are becoming increasingly popular. A 22" screen, for example, can typically show a resolution of 1680 x 1050. As TFTs take up less room and are much lighter, bigger screen sizes are easier to accommodate.

Larger screens can run at higher resolutions (see Graphics cards) so you can see more on the screen. However, unlike CRTs which can display a range of resolutions, most TFTs are designed to work at one specific resolution. You may be able to change resolutions but the display will likely not be as sharp.

Another consideration with TFTs is the viewing angle. Move too far away from a "square on" position and the screen may become more difficult to read. This varies from monitor to monitor.

Many TFTs above basic models also have a digital input (which requires that the graphics card has a digital output) which should produce an even sharper image.

Given the smaller size and weight of TFTs, and the fact that prices are still coming down, they are the monitor of choice unless you need crystal sharp displays at more than one resolution.