Received my 7800 today. I hooked it up and popped in a few different movies. First let me say my current set up is temporary and not ideal. I hope to pick up a copy of Avia or DVE in the next few days so for now, all picture adjustments are done by eye.
I have no screen (using a white wall that is not completely smooth). White walls, white ceiling. I have some ambient light coming in, yes even at night, because I have some thin drapes covering large windows overlooking a patio. I will either get some dark, lined drapes or tint the windows. Because the projector was not in its final position, screen size was limited to about 73 inches (diag). I have it mounted low in front of the seating position. After I get it set up in its final location, high behind the main seating position, I will be getting a screen.
Toshiba 4800, running progressive through component/BNC input.
I watched about 20-30 minutes of Dark City, Hamburger Hill and Romeo+Juliet.
Since this is my first projector, the experience of having such a large screen (even only 73) was quite amazing. I am moving up from a 40" 16:9 Toshiba. It just feels much more like a movie experience. I played around with the lights in the room to see how bright I could make it and still have a watchable picture. I may use one of the memory settings to create a "daylight" calibration for non-critical viewing.
The 7800 seemed quiet in operation. My Series 2 Tivo is easily louder. It didn't matter if I was sitting behind or standing in front, very quiet. Not silent though, you can here a slight fan sound but no color wheel whine.
I think I saw an occassional rainbow. Certainly nothing that I would consider close to a deal breaker. Given my current evironment, I was surprised just how good the picture looked. If it never got any better I would still be happy. The picture seemed VERY bright to the point of being too bright. I am guessing part of that is because I am running such a small screen size, is that correct? I will probably end up around 85"-90" (diag) but I am sure it will be plenty bright for that.
I will hold off on any detailed comments until I get it calibrated especially since the big screen "wow" factor will take some getting use to. I will say based on what I saw tonight, that I am very happy with this projector.
On a side note, I would like to say "THANK YOU!" to every one that has contributed to this thread and the forum in general. Not only did a get a good deal on the 7800 but also for the information/comments by the forum members. Without which, I would still be watching movies on that old Toshiba.