you can buy a 720p projector to save some bucks, and then consider upgrading when 1080p projectors become affordable.
Difference between 720p and 1080p projectors?
I've had an Optoma H79 projector for 5 years and it still works great, but I'm wondering how much video quality difference is there between it's 720p resolution and newer projectors offering 1080p. And is there a very noticable visual difference/improvement or essentially the same?