I hope this doesn't sound rude: At this point, I'm not looking for recommendations (that may change) but instead would like to know if the two points of criticism - noise and lack of a MOV at the input - have been addressed in the Plus version.
The intended use of the PSU is initially to replace a dying sub-$10 PSU in a very old Pentium E5400 system, and later to power a new entry level machine when the owner has saved up enough - probably a Ryzen 5 with IGP with a possibility of adding a discrete card still later.
I'm in a remote corner of India where it's often not possible to pick and choose. I've assembled a couple of hundred PCs - mostly budget with some mid-range and a few high-end systems.