Been using a couple of these: https://www.parallelminer.com/product/z9-mini-power-supply-460w-110-240v-80-platinum-94/
They are running 1-Full + 3-Standard on balanced, and can be paired/controlled together. The fans do move a little air, but I can't hear them. (only feel it coming out the back)
They appear to be sold out at the moment, but you can pick up the breakout boards / cables from above, and source the PSU used. I use the same ones in my old G8 HP servers, and you can pick them up from old server distributors for cheap. ($10-20) They are dead nuts reliable, and efficient. The Titanium versions are a bit harder to come by, and not worth the extra $$ to me. Standard Gold versions work fine as well, but they are usually almost the same price as Platinum.
4mo uptime here, BTW. Would be longer, but had a power outage during a snow storm a while back.