If you buy refurb then there is no bloat, just the OS. Some of them come pre-installed but many require you to install from the media that comes with it.
Didn't add 8GB because a media box doesn't need it, same goes for 1600 speed. You can always add another 4 or 8GB stick later to increase RAM if desired.
Instead of going for a non expandable slim itx setup with a power brick I went the case/PSU router in case you need extra GPU horsepower for 4k playback, again if desired.