so I spent some time looking into those cheap android boxes I was looking at to see if they're compatible with core-elec but they weren't listed on the compatibility list. I did look up some that were on the list but they're out of my price range and none of the have a/v out only hdmi so that won't work for me.
I ended up getting the usb cable I need to try and run my new external hdd on my current media player. I tried to find some user reviews for those cheap boxes but I only found a few(most were "professional" reviews) and none of them mentioned the media playback just apps streaming and gaming. the reviews all seem to say they're ok to good not great bad or terrible(other than the remote).
I'd still like to see actual user feedback on the media player function before considering one as a last resort.