I am currently using three LG ST600s in my home to stream content from a central file server to each of our TVs. I use both Plex and DLNA (Serviio as Plex's DLNA is still too buggy for me). I want to upgrade the ST600 in our main home theatre and am looking for a suitable client. I want to maintain both Plex and DLNA functionality (I do not want to re-encode any content).
I am comfortable using custom/beta/hacked firmware if necessary. I know the Roku is a fantastic Plex player, but is there a way of getting DLNA on it? Any other suggestions?