HiFi vs Cheaper Power Conditioners; What's the difference?

They are more quiet generally and sound better

Yup. You buy this stuff based on design, tech spec, or anything other than how it sounds, and you get what you deserve.

Can you define sound better?  The system I’m putting together (my first system) is:
processor: marantz sr6013
 (connected to furman via audioquest nrg-z3)
front speaker amp: mcintosh mc202
 (connected to marantz via audioquest red river;
  furman via audioquest nrg-z3;
  b&w cm9 s2 via audioquest rocket 33)
center channel amp: mcintosh mc7100 mk 2 (bridged)
 (connected to marantz via audioquest red river;
  furman via audioquest nrg-z3;
  b&w center 2 s2 via audioquest rocket 33)
turntable: clearaudio concept
 cartridge: blue point special evo III
phono amp: ps audio nuwave phono converter/pro-ject ds2 tube box
 (connected both to furman via audioquest nrg-z3)
power conditioner: furman 15 pfi
 (connected to wall via audioquest thunder)
"screen: si solo pro 100"" slate 1.2"
projector:  epson ls1000
( connected to wall via audioquest y-3 and furman pst-8)
front speakers: b&w cm9 s2
center channel: b&w center 2 s2
rear speakers: b&w fpm-5
side speakers: b&w m-1
sub: jl e112
 (connected to wall via nrg-y3)
 
other accessories: alexa input
  apple tv 4k
   (connected to furman via audioquest nrg-y3;
    marantz via audioquest cinnamon)
  logitech harmony elite

The main questions I had were I was thinking of getting another furman 15 pf i to connect the e112 into and also if I need a second power conditioner (perhaps a ps audio p5) to plug both the mcintosh amps into.  I have a bunch of separate wall outlets but don’t know if they’re on the same circuit.  Wall outlets are 15 amp.  Any help greatly appreciated.