If you have a small screen and sit far away, 720p is fine. If you have a huge screen and sit very close, the upgrade would be worthwhile. Here is a chart showing when you get the resolution benefit for a specific screen size/viewing distance.
Now that we've thrown 'em off the trail, use the form below to get in touch with the people at Engadget. Please fill in all of the required fields because they're required.
If you sit 10 feet away from your tv then it's a stupid upgrade.
If you have a small screen and sit far away, 720p is fine. If you have a huge screen and sit very close, the upgrade would be worthwhile. Here is a chart showing when you get the resolution benefit for a specific screen size/viewing distance.
Here is a chart showing when you get the resolution benefit for a specific screen size/viewing distance: http://www.carltonbale.com/2006/11/1080p-does-matter/