I don't own one, but I know first-hand that it is an exceptional projector and that it would be hard to go wrong with it. I was considering Z4, but went with a competing model, only because I would be sitting at borderlined close proximity to the screen, at which distance pixelation (seeing individual pixels) may have become an issue. However, at distances of 10ft. or more, the Sanyo was noticeably sharper than the projector I bought.
I read that in a review about the pixel issue. My setup would have me sitting about 14 ft from screen and projector at 13ft approx. Do you think it would be much of an issue at that distance.
I recently installed one at a friend's and their front row would have u sitting at 10 feet I believe. No SDE that close and I can say that 14 feet would be "too far away."
You would have to be sitting at less than 9ft. to really notice any pixelation with the Z5, so it would probably be a good choice for you. Of course it all depends on how big your screen size will be, as well. You should be fine with just about any screen size up to around 120" or so, at 14ft. away. I agree, however, that 14ft. would be a little too far away and lessen the impact at 100" screen size or less.