advantages and drawbacks. Front projection CRT gun alignment can be costly and time consuming unit is heavier. Excellent picture. Pricey. Front projector LCD no gun alignment. HD reasonable. Sony VPLHS20 under 35K. bulb replacement every 2000 to 3000 hours. maintenance monthly (filter cleaning) no alignment required-focus adjustment when first set up. DLP Bright picture. bulb replacement 1500 to 2000 hours. CRT great picture-- Heavy for size (that's an understatement) smaller 34-38" 16:9 image. RPTV CRT better weight to size ratio. Most economical for size. Convergence an issue on some sets, not on others. Varied brightness levels (while this is an issue in a store when you walk around and look at a TV from all possible vertical and horizontal angles, is not as much of an issue in the home where TV viewing is primarily a static event.) Plasma best off axis viewing other than CRT, gradual brightness deterioration (similar to CRT and RPTV CRTs) and like those sets replace at half brightness. As in all digital (non CRT sets) may notice a screen door effect. If you live at high altitude (folks in Colorado mountain areas) check viability of set at altitude. Burn in and Life span images may be over dramatized. LCD (direct view) thin 'hang on the wall" like plasma. Refresh rates are improving to reduce image blurring on vast moving scenes. Black levels still need some work and the price is starting to come down and larger sets are becoming available but still, generally under 40" as in plasma sets light weight. MMDs- these are the hot displays available in the mid 40 to over 60" size. Rear projection with stable brightness and better off axis. Long life lower priced user replaceable bulb (picture having a 'new' TV every 5+ years for around 300 dollars. Lighter than plasma. reduced screen door effect. More competitively priced than any set for there size, other than RPTV CRTs. Deeper than Plasma/LCD but about 15 to 20" less than a 20" CRT.The hot sets, now. Available in DLP, LCD, LCOS and D'ILA.
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