Plex works good but has some drawbacks. It won’t stream video in .iso or Video ts formats. I have over 500 movies in video.ts folders that it won’t stream. In my case I set it up to use it with my Roku box and when I played the movie it started playing fine. What happened though is that it plays the first .vob file inside the folder and then stops. Some movies are broken up into multiple .vob files and that means you can’t watch the entire movie. What I had to do is use a third party recode program like “Handbrake” to put it into an MP4 file. It takes a long time to convert a lot of movies but it works well.
Then you could make the changes you want to make the perfect player in a box. If you could write "apps" for it, you could make personal folders, specific web sites and other things all show up on the screen for a one click play. I'm reading that Roku doesn't even have YouTube as an app. Seems strange to me to make someone go to Chrome and type in the address each time. One of my desires is to get Gateway Worship video's to play on my 55 incher with 80watts per channel stereo. It would be about as easy to type in the address on the laptop as type in the Roku each time. Not everybody is that enamored with just going to Netflix and Hulu each time.
The WD player seems to play everything right now, but I'm still reading.
If you need a video converter,( as well as a converter for almost anything) I like DVD Videosoft Free Studio. You can download any app you need or download the whole studio to do any conversion you can think of. The price is FREE with no nags.