I work with images a good deal, and many of them are for print media. The colour rendering has to be spot on, and for this kind of work I maintain there's nothing to touch a good CRT monitor. I use 21" Samsung monitors for this aspect of my work.
For everything else, give me a good TFT display any time. The one I use (AOC 19") provides a picture quality that can only be described as superb and the definition is as good, if not better than the Samsung CRT. The screen is bright, colour rendition is very good, and there's absolutely no question of a piece of guaze being anywhere in sight. These displays have come on by leaps and bounds over the past two years, and they can rival all but the very best CRT monitors now.
Choose your display to suit your work - there's no hard and fast rule - but do not discount a good-quality TFT. You'll be doing yourself out of quite a treat if you do.