I'm thinking of upgrading my AE300 to a Z4 and have some q's regarding the contrast levels and lens shift. I've got it ceiling mounted, but with not having any lens shift I have an image thats a little to high for my liking, I sit a little under 3m from a 77in screen. How much effect on the image focus does lens shift have? worked out I'd need about 35% below. Also, I've been reading about the improved CR ratings on the next gen LCD pj, really though, how much better will it be to a well setup AE300 in a room with cream walls, cream carpet and white ceiling? thanks for any help!