[joshuata]

It is important that Plex comes in two parts: the server and the player.

I would absolutely recommend Plex Media Server as a backend. It is very powerful and has great support by the community (see PlexPy). It makes it very easy to store all my media on my home NAS and watch it from any device, even outside of my house. There isn't really anything like this for Kodi that I have found.

For frontends, Plex Media Player is alright but you can also use Kodi with the Plex plugin. This is especially useful since there are no linux builds of Plex Media Player available. I don't really have a preference for one or the other.

[konsumer]

You can also just use the web, or one of the many apps, like Roku, iOS, android, Wii, etc.