47 Meters Down (2017)
Average acting but the movie itself is way better than all the reviews I read said about it.
The special effects goes from good to average (but overall it works).
I always like movies with the concept of people being stuck and trying to get away so I know I'm biased.
Not as good as The Shallows, but not bad in my opinion.
Oculus (The Mirror - 2013)
Pretty much the opposite from 47 Meters Down: I heard so many good reviews about this movie that it was a bit of a letdown.
In this one the acting is quite solid (more Katee Sackhoff is always good). I thought the movie's own rules are not 100% clear and because of that it was less scary to me than it could have. They tried to edit constant flashback scenes in a clever way but in the end it felt messy to me and sometimes broke the tension. Maybe a good candidate for a fanedit (it's just that I'm not a fan enough to do it myself, lol).