Buying an HDTV: Cut through the confusion

By Jennifer Hughes

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You might want a new television because your old one is, well, large and ugly and, well, old. (And your neighbor's is really nice.)

Or, you might want a new set because your old one doesn't work quite right. And you don't want to keep slapping the top of it.

Or you might want one because you heard that by June 12, 2009, all TV broadcasts in the United States will be digital –- and you don't want to fuss with a converter box.

Now that you've made the decision to go shopping, no matter what the reason, you will now have to make a number of decisions regarding your new set. There are several types of televisions available; the one you want will offer high definition, and are labeled HDTV.  Remember, though, that while all TV broadcasting will be digital, it will not all be in high definition.

Here is a quick guide to help you sort out your options, so you are not overwhelmed when you get into the showroom.

First: Determine the size you need.

A very rough guide is to multiply the size of the screen you are considering by two –- that will give you an idea of how far away you should sit. So, if you are considering a 40-in. television, you should be able to sit somewhere around 7 ft. from it.

Second: Should you go with plasma or LCD?

Technology has changed and improved a great deal in the last 12 months, so many of the differences between the technologies have become less drastic. For example, plasma used to suffer from "burn-in;" when a ghosted image is left imprinted on your screen. That is not really a big problem these days. And LCDs used to be touted for their longer lifespan than plasmas, but plasmas are catching up. Mainly, it's a personal taste issue:

• If you want deep blacks, go with Plasma technology. LCDs offer just slightly less rich black.
• LCDs are generally less expensive to run.
• LCDs have better resolution –- but Plasma has better picture quality.
• If you'll be viewing from an angle, go with a plasma.

In general, LCDs are a great, slightly longer-lasting choice for 15-in. to 42-in. sets. Plasmas are an excellent option for home theaters.

Third: Understand the numbers

Finally, you'll see two sets of numbers on literature regarding HDTVs. In order of picture quality, best to worst, they are: 1080p/1080i and 720p/720i. Here's the scoop:

• "p" means progressive scan, "I" means interlaced. Progressive-scan formats convey all of the lines of resolution sequentially in a single pass, which makes for a smoother, cleaner image.
• Realistically, there is no programming available in 1080p. So the two signal inputs you'll be looking for should be either 1080i and 720p.
• However, relatively few programs are broadcast in 1080i.
• There is a big price jump from 1080i to 1080p – it can easily be a difference of $1,000.
• Videophiles say that 720p is better for sports and action, while 1080i is better for movies.

Check out the 1080i on plasma sets and then on LCDs, and then look at the 720p sets. (If you'll be viewing from an angle, that could preclude LCDs altogether.) Consider what types of entertainment you'll be watching, and see what looks best to you. Finally, think about your budget and get the best value for your dollar.

Once you've made your selection, don't forget cables. Frequently they are not included with your set. Ask the salesperson for advice. If you have cable service, call to request HD service, otherwise you won't receive HD channels. (It might also be time to review your cable television service) If you used to have an outside antenna or rabbit ears to get reception, you need to decide whether satellite service or cable will best suit your needs. See "FAQ: Cable vs. satellite TV," to help you make your decision.

Remember also, not all broadcasts will fit your screen exactly. Some TV programs fit square-screen televisions, and others are made to fit wider screens. If those black bars on the sides of the picture bother you, check the set's documentation to learn how to fit the picture to your screen. However, if you crop the picture, you may lose some of the original image or it may become slightly distorted.

There is a new set on the shelf for everyone. Being prepared when you shop by knowing a bit about your various options will make the selection easier – and maybe even fun.