There are many reasons to buy an HDTV now. 1) Your team could be good this year. 2) There’s more stuff on high-definition TV than ever. 3) Prices are dropping. If you’re looking, here are some things you should know: DLP •Millions of tiny mirrors reflect light to produce a picture. You can recognize DLP (digital light processing) sets in the store: They’re the big, boxy televisions. LCD •Electrically charged liquid crystals untwist just enough to let the correct shade of light pass through. PLASMA •Bits of gas are ignited to produce light. FAQs Which is better, LCD or plasma?...