I'm looking to build a 24/7 plex server, and I was wondering if anyone had recommendations or feedback on the models I've been looking at.

Efficiency is important to me since it'll always be on, although a decent amount of that time will be idle. So I'm kind of wavering between getting gold/platinum vs just getting a good unit that's bronze.

I'm building in a mini-ITX case with a large number of HDDs, so I've eliminated the fanless PSUs. (This seems to unfortunately rule out a lot of the well-reviewed lower wattage PSUs on this site.)

So far I'm looking at:
- Seasonic SSR-360GP (gold)
- FSP Group AURUM S 400W (gold)
- Corsair CX430 (bronze)

Any other models I should consider?