Mind you, that's not a fatal flaw, but a weakness in an otherwise strong projector. Be sure, if you buy one of these Sharps, to set your focus about 1/3 out from the center. That will give you the best overall sharpness. (Even 1/3 out, you can see a little softness in the center, so some might like 1/4 of the way out from center.)
The fan of this unit rattles a little for the first couple of minutes. While I expect that is just this unit (it's been around the block, I'm not the first reviewer to beat it up). Not a big point, as even if other exhibit this to some degree, it definitely calms down after a couple of minutes. (Overall, the fan noise levels are on the high side of average. I did notice, when doing the Epson 6500UB vs. XV-Z15000 side by side images that the Sharp was a little bit noiser than the Epson - a db, or perhaps two).
And finally, there's the warranty. I'm just not a fan of 1 year warranties. Buy an extended is my best advice, even if 3rd party (they are cheap). Projectors cost too much to repair, and if out of warranty, and a lot of hours on the lamp, it may not make sense to repair it at all. That would be a terrible thing if you've only had it for 13 months! I figure everyone should have two years warranty. With some competition offering three years, and several companies providing replacement programs, the Sharp warranty is as minimal as it gets.
OK, I've raved positively, and I've bitched about some flaws.
I should also note, that the Sharp lacks CFI (creative frame interpolation), but only a few LCD projectors have that so far. Sports fans would like that feature, and it is a feature that I think most projectors will have in the next two years. Creative Frame interpolation has been a hot feature in the LCDTV market.
Overall, this is an excellent projector. If you can get over any placement issues, it seems to me that the Sharp XV-Z15000 is the strongest performing new DLP projector to hit the market recently in it's price range. This Sharp definitely is up to challenging the 3LCD projectors, and the Sony VPL-HW10. It may not have some fancy features like creative frame interpolation, or support for an anamorphic lens, but it really looks great. I'd say it's one fine deal for around $2000, and one of the best choices around.
The Bottom Line: If the Sharp XV-Z15000 will work in your room, if the budget is tight, and especially if you like the DLP look and feel, this one is about as good (a value) as it gets. I see myself recommending the XV-Z15000 to a lot of folks!