I've used this for 3 months now. It's like no compact I've tried before, in a good way. First impression is that it is very sheer - since I'm pale, I got the lightest shade (51 Porcelain) and it disappears on my skin. (The rubbery sponge it comes with might be a part of the reason, as it doesn't seem to be picking up much at all at a time.) The result is not your typical visible, chalky layer of powder, but something far more subtle: what it mainly does is smoothing and blurring, as if you'd applied a softening, or, dare I say it, rejuvenating filter over your face. It also does not feel ~dry~ when first applied, unlike some others I've used.
The downside of it being so subtle and sheer is near-complete lack of buildable coverage - you either need nice skin to begin with, or a concealer that works with this. As for lasting power, the packaging claims it will stay matte for 8 hours. In my experience, weather conditions and products used alongside with it will have an impact on that - I definitely had some greasy T-zone issues on hotter days during the summer, but have now found a routine that works (Bourjois Flower Perfection primer + a bit of liquid concealer + a brushing of loose rice powder for extra oil absorption power, and keeping blotting tissues in my purse for emergencies). I suggest taking the oil control promise with a pinch of salt. There is however almost zero buildup in fine lines even after long days, so that's a plus.
The box is cute and not too cheap-looking for the medium price range, although I don't think the rotating mirror lid makes a huge difference. I've also dropped it on a tile floor, which resulted in the mirror lid coming off, but it easily snapped back on, with no lasting damage, and the powder didn't crumble either, so I'd say it's sturdy enough.
I'll buy again when it runs out, but it seems like that will take a while - the size of the product looks small, but so far, I've barely worn out the pressed logo.