in fact, I usually watch movie with projector that gives me a lot of adjustment already. IF this is the case, do you think Z7 and 3900 is not really a big difference?
A lot of adjustment is not equal to the quality of video. If the source is good, you may adjustment better and better. The effect is "good x good" not "good + good". You better to go to showroom for comparsion.
the difference is quite obvious. Z7 has 6 memories to store the preset, and its video adjustment functionality is far more advance than 3900.
I tried a DVD at Tom Lee this afternoon, and PQ for both machine is impressive. However Z7 can deliver a more defined and solid image. As I watch movie at home with projector most of the time, therefore PQ while projecting a large image size is critical to me other than sounding. I find the image is a little bit 'lag' for 3900 (very minimal) while Z7 is crisp, smooth and sharp. If one has to put the differences into #, there should be at least 10%.
Color saturation is more or less the same on both machine. 3900 is like watching by film mode, while Z7 is very digital oriented.
Good to hear your new machine (Z7) at your home. And hope you can understand what I told you before. Actually, I bought before China New Year. I guess I have meet you in showroom. Have you bought in MK?