Plasma. Prices have dropped considerably to the point you can buy a quality 50" set (Panasonic, Samsung, Philips) for under $4000. Rear LCD and DLP projo's are great, but you'll be replacing the bulb every one to two years at about $250-$300 each. It won't take long to make up the difference in price with the savings in no bulb replacement. Newer plasmas won't burn in like the older models and should last 10-15 years before they reach their "half-life".