AVS Special Member
Join Date: Jul 2001
Location: Floyds Knobs, IN, USA
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FrankS, that spot is a dust blob which is 3X the risk (as is dead pixel risk) of 3-panel LCD compared to single-chip DLP. Return it as cleaning will void your warranty as you have to open it up.
That fact, worst constrast, more pronounced screen door effect (may appear "sharper" to some), and organic panels (earlier wear, polarizer damage, etc) makes LCD less appealing to me.
Advantages are LCD is easier to mount with lens shift, less lens offset (great for ceiling mount), quieter, appear brighter for the same lumen rating, more accurate colors.