I've been using the Roku as a means of using Plex on my TV for the last year or so. It's pretty easy to use and does the job well enough, but I've always been a bit sad that the interface is so poor compared to Plex Home Theatre.
I've been considering getting Fire TV to replace the Roku (and will shift the Roku to another TV), what do people think about how the two different devices compare? I'm not really planning on using Netflix etc. in the medium term, but it's something I'd consider much later in the future, so that's not really a big factor in my decision making.