Plex on ReadyNAS Pro

Thanks very much. I suspect I can end this line of questioning with just a few more questions (not really readynas issues any longer, but I still would appreciate the input):
1. For a relative newbie, how do your players recognize the NAS via NFS or CIFS? I can disable ReadyDLNA, but need PLEX for ease of streaming for my non-techie relatives.
2. I understand the lack of transcoding with DLNA. My Handbrake copy has 2 channels so I can use that for streaming even for my projector expecting my preamp to do the up converting. Recommend that over the 6 channel? Both will have to play through the bluray player before going to the preamp.
3. In regards to your 3 suggestions: How do you beef up a Pro 6? And if you have a Pro and are streaming 1080p bluray streams, what type of players do you have? As of now, my Handbrake files stream very well via PLEX using my Roku 2xs and bluray player.

Thanks.