Your trinitron is locked to NTSC?lol
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All my tvs are multi region.
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The issue with PS3/360 is that you need a large widescreen for plenty of games, otherwise the picture is too small. 4:3 32" just doesn't cut it.
Wii doesn't matter so much, in fact it doesn't even bother me running that on SD CRT.
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I'd be fine with the 29" viewable or whatever it is around there.
I find the 28" viewable 4:3 area on my XBR800 is plenty from around 5' - 6'. I've never been big on huge sizes aside from long viewing distances.
MP or anything involving sniping (or even iron sights long shots) isn't good if your picture is smaller than 32". Sure you could sit a couple of feet away from the screen but that's bad.
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I don't have any issues with the aforementioned setup. I don't really like playing FPS on console either.
You have a 43" monitor?
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TV at a moderate to fairly long viewing distance is another story.