For an inexpensive reader, I did not have huge expectations. But it reads very well all dvd and blu ray I did test it (fortunately I hear you say) but most divx, mp4, mkv.
The menu is not very beautiful, certainly, but very simple and practical (eg that I appreciate, being able to jump to a specific time)
I was also very happy when I had to put a movie (blu ray) paused, remove the disc, put another movie, and when I returned he immediately previous restart where I left off . Very handy for the series for example, and what time saved not having to stuff again these crap advertisements we are given as punishment when you pay a dvd / blu ray.
In short, very good product, I recommend it.