I've messed with a lot of the video players and they all offer different features (Act 1 having more features than most, but lacking the main thing I needed) and then I ran across cinema. If you have a lot of movies and/or series on your phone, then navigating thru the standard Gallery is difficult to use to find exactly what you're looking for, but Cinema is text based and, most importantly, you can stop what you're watching, exit out, do anything else, then go back and not lose your place. This is important to me because most of the time I'm watching videos on my phone, I might only be able to watch 10 minutes before I have to do something else. I know New2u mentioned it and I wanted to expand on what he said.
Hope this helps!