RGB -vs- DVI Interface

CRT monitors are generally connected to the computer through an Analog-RGB interface. Most of the early LCD monitors supported that interface only, but an increasing number of new ones support the DVI interface only, or both. DVI interfaces generally produce images of higher quality. For Analog-RGB, the computer converts the image data from digital form to an analog signal and transmits it to the LCD monitor. The monitor converts the analog signal back to digital data and displayed it on the screen. In case of DVI, the computer transmits digital data that is displayed directly on the screen. Not all computers have a DVI output, but if your computer does, buy an LCD monitor that works on DVI. In case your computer does not have a DVI output, you can upgrade it with a graphics card – most graphics cards come with a built-in DVI output.
As far as manufacturers are concerned, ViewSonic seems to be a good trade-off between quality and price. Acer appears to be the value-price leader. Apple and Sony are the winners when looks are a factor.