there are also downsides!

Positives:
In the dark, very good picture. Even with about 2-3 meters screen size. And that with the size of the little ones!
Neutral:
Pale in darkened rooms. Do not use in direct sunlight or room lighting is switched on. Especially not at a distance.
Negatives:
Fan too loud.
Bottom of the projector could be rubberized to prevent slippage without a tripod.
What most disturbs me:
.mkv without sound! Umkonvertierung much too time-consuming.

0.5 points from the noisy fan
0.5 points from the ambient light-related restrictions
1 fat point deduction for soundless mkv videos - or MKV "lie" by Philips

Addendum to mkv + Audio:
AAC and AC3 ever not function. Not one tested by about 20 MKV movies played on clay. When you extract audio track, convert to mp3 and the container then feeds again, it comes. But who uses the MKV container already mp3 reinzupacken to there? About an external player, such as a Tablet PC with HDMI it comes naturally, via external 2.5-inch hard drive, which was fortunately recognized and also via SD card, no sound! AAC and AC3 are the most common audio formats in MKV and be played from my Samsung TV without difficulty via the USB input. Who advertises mkv should at least point out such gross deficits, my opinion. I hope to have helped, nice greeting.