Is my friend right? 720p vs. 1080i problem

[astroglide]

p = progessive
i = interlaced

progressive scan means that every line on the screen is refreshed at once. interlaced means that every other line refreshes, then the missed ones are hit in a second pass. 720 is lower resolution than 1080, but because of the progressive nature it will produce a more "stable" image, which is why it's preferred for high-action scenes (e.g. sports).

this really isn't something you should sweat, but i would suggest an lcd over a dlp for reasons i have already described in previous posts (dlp rainbows). a search for hdtp, dlp, etc should bring up some of the threads. sony's new 3lcd sets look like a good deal.