I have been looking to upgrade my system and have recieved great input from people on this site. During my "research" I noticed a large difference in the contrast numbers. I'll give an example Runco claims 3000:1 vs. jvc 30000:1 (I think my numbers are correct). So I looked into this more and found this article. Hope it may serve as some help for others. http://www.ausmedia.com.au/projector%20contrast%20ratio.htm