I've owned the following media players: WDTV2, Popcorn Hour A210 and A300, Mede8er MED500X2, Pivos AIOS, Dune Smart Series D1 and Dune TV303D. I am currently using Dune D1 and TV303D. The Popcorn A300 was returned after a week of ownership. It was probably the worse media player I've own. The PCH-A400 has had many updates, and it is working much better than the A300. The PCH-A210 was solid. The only reason why I sold it was due to firmware update were horrible. Popcorn hours has the worse firmware updates. If it doesn't fix it, it will brake everything. I got tire of it and sold it.
The WDTV2 is a nice all in one player, but some files work great and other files do not work at all. It was too unpredictable for me. The Mede8er was an awesome media player, but the jukebox was difficult to edit. The newer Mede9ers are better, but I still don't like the jukebox. You need two different programs, one for more and the other for TV shows.
The Pivos AIOS was a very inexpensive media player, which played all of my files without any issues. However, the remote is horrible. It is very unresponsive, and it was just plain horrible. My wife hated it. It has a juekbox, but it was a PIA to set up.
So, I am using Dune D1 and TV303D. I wish I had bought a second Dune smart series media player. In my opinion, they are the best 2D media players out there. I'm also using the following jukeboxes: Zappiti, Yadis and 10Muse. Zappiti is simple and easy to use, but lately I've been getting annoyed with it since it won't remember, which movies I've watched or not watched, and other little issues. Yadis is a great jukebox, it is easy to use, and it has many free skins. However, my wife, kids and I hate how it handles TV shows.
In the last 2 days, I've been setting up 10Muse jukebox for the Dune and iPad. It was a little bit difficult learning how to set it up, but once you do it once, it gets easier. I love the iPad app / jukebox, which also serves as a remote control for the Dune. I am currently using the free app version, but I will be buying the $19.99 app as well. I will be making the switch to 10Muse jukebox. In my opinion and short experience with it, I've concluded that it is the best jukebox for the Dune / iPad. Furthermore, their support is excellent.
Dune + 10Muse = Awesomeness. However, if you want an easy and simple jukebox to use, Zappiti is hard to beat. They also have an iPad app. So, my recommendation, if you want an excellent 2D media player, I would go with the Dune Smart Series. If that is too expensive for you, I would go with Mede8er. Even though, I hate their jukebox, they are the next best 2D and 3D media player.