OK So I have settled on getting a basic NAS to have a play around with. I'll look at something higher end in time when TV's in the house are all 4K etc etc but wondering what would be a good cheap option to send maximum 2X 720p-1080P streams simultaneously probably usually less than 3-5mbps bitrate each via Plex (and CAT6). PS3/PS4 and Smart TV all have Plex app and none struggle with 1080p playback in general directly off a USB etc so there is plenty of grunt at the playback end I think. Some basic transcoding capability would be nice in case the kids play a file back on an Ipad etc. Have 2X 3TB Greens I can re-purpose Synology DS119J might be a little too light? Maybe DS218J?