I have a M93p Tiny with the i5 4570T that I use as a Plex and file server, along with playing media on my TV. It uses about 10-13w at idle and I think peaks at 40-45w from the wall. Prices have gone up a little since I got mine (along with most hardware), one of those mini PCs with the Celerons you listed would be tempting if the difference is ~$50 or less. The one reviewed in
is $180 on Amazon, not bad for that amount of performance in a tiny box.