Difference between 720p and 1080p projectors?

you can buy a 720p projector to save some bucks, and then consider upgrading when 1080p projectors become affordable.

The Optoma HD20 is $999, and is an amazingly good 1080p DLP projector for the price. Also very bright--I can use it in a room with quite a bit of light. The 1080p projectors tend to best the 720p in a variety of ways, not just resolution. But even for lower resolution sources you will get a smoother picture. Blu-ray looks absolutely as good or better than any picture I have ever seen in a theater.

A 1080p pj will certainly look better than a 720p pj when it comes to br. Hdtv is another story. It may or may not look better depending on broadcast and your lighting conditions remembering that with ambient light you need more lumen output. I have a new Epson 8100 and could not be happier. It's not my dream jvc but it's kickbutt for 1.5k