After a few days with the 4805 (My first PJ ever) I am still blown away by the quality of the image.
I was originally shooting the image from an end table 20 feet back to a blank front white wall.
The entire room was white, and I have since repainted the room to a flat dark khaki/dark brown combo.
I haven't painted the front wall yet - I will be taping out the screen an using a DIY formula - but the image is still incredible, especially HD.
The image size is 11 feet wide, and the noise has not been a factor at all from the machine.
Also, I still haven't even calibrated the machine yet and play my 57" Hitachi HD side by side, and they are very similar in quality/brightness/contrast.
I figured I'd post this for any noobs who are sitting on the fence, and are unsure about making the jump. I knew ZERO about PJ's 2 weeks ago, and even I was able to make it succesful right out of the box. It is idiot proof.