Hi,
Well.. All of the above I suppose..
Ok, then you are looking for an ideal device.
Sadly there is no ideal device. You need to focus on your most important quality factors.
It's your decision, no one of us can do this for you.
If I was looking for capacitors, I would immediately say Nichicon, Panasonic, or Rubycon.
For others this may be: AVX, Kemet, Phycomp, Yageo, Epcos .... or any other manufacturer.
To me "Nichicon, Panasonic, or Rubycon" seems to be your personal taste.
AC-DC power supplies, Delta or MeanWell..
Why not TDK, Traco, Cosel ... or one of the others?
Again I see just "personal taste".
Without exact requirements the discussion seems to be similar to:
What is the best food?
* The one may say: a good steak
* for a vegetarian this will be a "no go".
* another one may say "blowfish"
* another one may say "pizza"
I'd say: it's personal taste. And is influenced by the region where you live, maybe climatic environmemnt, the application...
One may look for a power supply to run valves for compressed air.
Another one may look for a power supply to run a high end class A audio amplifier.
I doubt they come to the same power supply, I even doubt they come to the same brand.
Klaus