As a parting note, to make your home theater experience the most enjoyable and stress free, I recommend you not quibble over the last few dollars when choosing a dealer. Find a dealer that knows their stuff, has good policies, and can also advise you on the right screen, and recommend good performance cables. Spending a bit extra on better Digital (DVI or HDMI cables) will improve the image quality of the Sanyo PLVZ4, or any good projector.
The Z4 remains about the least expensive 1280x720 HD resolution projector on the market (of those with current technology). The Z4's razor sharp image, and ability to setup up easily in virtually any room, plus a solid 3 year warranty (most have 2, the Panasonic has 1 year), make this the price/performance choice. Just don't forget to get that calibration disk and some really good cables so it can do its best. . -art