Yes,  I'm going to install plex, when I get my freenas working! :-$. Still saving the money! Better do it right at first time! 
My question was just out of curiosity, so that when I get the system up and running, I have all this points sorted! 
My raspberry pi is struggling to keep up with my hi-def share, I googled and fund several posts saying that NFS is a lot faster, so I made my question to plan ahead! 
The problem with plex is that I will lose image quality in the trascoading, correct? Or I will not notice that? 
Best regards 
Soloam