Definitely the best streaming solution on the market
I love the PLEX solution. Streaming to iPhone and iPad is flawless and starts immediately. I run the server on a MacMini 24/7 and it is easy to install and setup, creating your favorite categories of films and connected with many streaming channel services.
Each user on the MacMini can have their own movie library, but the user has to be logged in so you cannot stream from two users at same time.
JK Bon about
Plex: Stream Movies & TV, v2.5.2