A month after buying this projector, I can confirm without a doubt that this is a very high quality for the price device. The image quality is excellent, the colors are saturated and it shows no rainbow effect, even in bright room. The lamp life is 4000 Studen in power saving mode (I notice no difference compared to the normal mode). I use the projector every day, he is quiet and does not bother me (the projector is about 50 cm away from my ears). The viewing angle can be regulated easily, the zoom function is also very helpful rich to optimize a matching diagonal width. I did not notice any disadvantages to this day. In my opinion, this is the best projector for that price. I can only recommend this product!