I bought my Optoma HD90 in the D-NEXUS website. After the payment has been realized (transfer bank account, I contact D-NEXUS before to be sure that they have the product in store). I has been waiting for one week until they confirm the payment, and some emails asking for news (they answers and keep me aware about everything). After that, Fedex delivered my the projector in 3 days. In the other hand I has been lucky because this kind of product do not pay french customs duty.
The projector itself (the casing) look great. I has been owner of a Optoma HD300X (the black brother of the HD33). The image it is almost the same, of course better colors and contrast (without doubt)... but overall I do not seen huge improvements, same interpolation artifacts with pure motion, but nothing real real disturbing, I like the pure motion system.
The black levels, are in fact no so good, but like my HD300X, the function Dynamics Black doesn't work really.
The brightness output it is not high (when you have light pollution), it is more or less like the HD300X level (of course , in a dark room it is quite bright).
Its not heating at all... I have been owner of an Infocus ScreenPlay 4005 and the mentionned Optoma HD300X. During the winter, I used like heating when I saw films. And in the summer ... well... I was sweat. Now it is over, the HD90 do not heat at all, just like a Blu Ray player. And for me it is a real advantage.
But my real issue is the "Hum" sound from the LED lamp. Either if the fan noise level is quite low, the LED hum when the image required high light fluency, could be uncomfortable and annoying. After contact D-NEXUS , who put me in contacts with Optoma Taiwan. They told that it is normal, it is because this technology. Well I'm a plasma physicist. I know very well the origin of this kind of sound. And I still think this is a manufacture problem or low quality filters and electronics equipments.
Despite the hum noise , I m happy with my purchase, I hope to have a long life with great image quality lamp. But I think that there are better projector (as far as I understood from the review sites) at the same price level. As far as I concern a real price for this projector should be 2500€. I pay 2950€.