Flat Panel TV

That is a difficult question and open to debate. However, there are a few issues to consider:

Of these two, LCD TVs, though a little more expensive, are currently the most popular. This is mostly because there are fewer problems with 'burn-in'. Burn-in occurs when there is a static image, such as an off-the-air signal, is left on for a long time, typically 20 minutes or more. Plasma TVs are combating this, with 'screen saver' type technology, so it is rarely a problem. Plasma TV's major advantage is that the picture quality is thought to be slightly (not dramatically) better and they currently come in larger screen sizes.

What other things to think about?
Screen Size: Screen Size is mostly a matter of taste and space. Most people prefer bigger over smaller. If you are going for very large screen size, think plasma. In the bigger TV range, plasmas are currently less expensive and better.

Definition (720 vs 1080 pixel resolution): When you are buying a TV you will often see 1080p. This means that the TV is a 'higher definition' and thus better picture quality if you are receiving a high definition signal. Problem is that there is not much content which is available with 1080. Currently it is mostly about movies (if you have a high definition DVD player) and video games. But this is likely to change and slowly we will probably see more and higher definition content available. If you are looking for high definition (currently 1080p) think LCD. There are more high definition LCD's around. If you are interested in saving some money, forget the 1080 and opt for the less expensive 720.

120Hz or standard 60Hz: The 120Hz show smoother more realistic movement. In fast-action viewing, such as sports, many people claim that a 120Hz TV gives smoother more realistic image.