I actually have Plex installed and running as well. I previously only used it to watch my media when I was out of town/away from home, but I just bought a Roku 3 a few days ago, and the Plex experience on it has been pretty solid so far, so I may just purchase another one and cut my XBOX 360's out of the equation (and thus DLNA, since the only reason I was using DLNA in the first place was because that's what they support). Plex's DLNA menus are a bloated mess, though, when compared to MiniDLNA's default "folder" view (which you can get with Plex DLNA, you just have to scroll through like 10 options first).
As far as I know, I'm using the latest stable release for my router (
Netgear R7000). I don't believe this router has 'official' support over at dd-wrt, but Kong owns one and is
actively developing for it. It works perfectly in every other respect, so I guess I can't complain (plus Netgear's OEM firmware is usually pretty clunky). I don't necessarily need all of the features of dd-wrt, but I'm a hopeless dork I guess. :)
Interestingly enough, that is almost my exact networking setup. I wired my entire house with Cat6 ethernet (3 drops and a coax per room, keystone jacks) which all terminates into a patch panel then an (unmanaged) switch, which my modem and router are plugged into in a spare bedroom closet. I don't use static IPs anymore, but I do use DHCP reservations for literally every device I own, which is for all intents and purposes the same thing. I like DHCP reservations because I can change my entire network setup on a whim from the router GUI instead of taking a grand tour of machines in my house, plus it can handle mobile devices that static IPs are impractical for.
In any case, I appreciate your response, and I'll probably continue to follow MiniDLNA's progress if for no other reason than I appreciate its no-nonsense "less is more" approach.