I'm considering the Z1 for my first projector and I have 3 questions. I've read to sit back 2X screen width to avoid SDE with the Z1, does that sound about right? I want to use a 52"X92" B/O cloth screen, and sit 14-15 feet back. Is that screen size & distance sound reasonable to avoid SDE? And finally, I've read a lot of posts from people having very short life with their Z1 bulbs. Is that common or a rarity? Any info would be great. Thanks.