Note a number of the earlier JVC projectors including the RS20 suffer from optical block degredation after 1000+ hours, search for 'pink band' on this forum and you will see a lot of complaints, and its expensive to fix (typically failing after the warranty expires). Personally I would not buy an older JVC model because of it. My RS20 suffered this fate which forced me to upgrade as otherwise I was quite happy with it. I now have a RS56 and the picture is better but only incrementally (a bit brighter, blacks a bit better etc.). 3D is the main difference.