Not really objective or anything, but I gather that the noise sounds about the same as the Optoma and the K330?
I have one of these projectors and I have experienced a burn out on the blue LED after only 2,700 hours. I live in Japan and the Japanese warranty is only good for 1 year. Since I bought it 1 year and 5 months ago, I'm out of luck. Out of warranty repair seems futile. I would have to send them my unit, wait for the repair estimate, then if I feel it is too expensive, I'd still have to pay a $50 fee just to get it back. I was told the repair could cost up to $500 depending on what is wrong. I might as well buy a new projector, but there is no way I will buy another NEC LED based DLP.
This could seem like a bit of bad luck, considering the 20,000 hour life estimate, but it actually seems to be a design flaw. The red and green LEDs both have fan cooled heat sinks attached to the back of the LED circuit boards, the blue LED, however, has a much lower quality heat sink with smaller surface area and fatter fins and no fan access. I would not be surprised if every unit failed far short of the 20,000 hour mark. I paid a premium price for what I though would be a premium product with many years of use, but have ended up with something that is far sub-standard. It is MUCH dimmer than a regular bulb based projector and lasted a similar number of hours, but has a MUCH higher maintenance cost.
Now I'm searching for replacement LEDs so I can repair it myself, but the search is not going well.
If you have an operating one of these and you're out of warranty, I recommend immediately opening it and installing a small fan blowing onto the blue LED heat sink. If you haven't bought one, but are considering it, keep searching. This projector isn't worth the trouble.
I will post some pictures on the internet soon. Google it in the near future to see exactly what design flaws I'm speaking of.