Michael, in the December Consumer Reports tests that I referred to, the 42X1 was rated "very good" in HD quality, while the 1080p 42" Panasonic was rated "excellent"(both were rated "excellent" for SD quality, relative to the standard for that material). As has been said, however, at the ordinary viewing distance involved it's unlikely that a noticeable difference would exist between the 42" 720p and 1080p with HD material.

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Enjoy the music, not the equipment.