First you have to decide what your needs are. Do you want surge protection with some filtering to reduce some extraneous noise from your AC mains and components? This is passive conditioning.
Or do you want a power regenerator which takes the incoming AC from the grid and your service panel and cleans the signal (reducing noise) then regenerates a new sine wave to power your components, (Active power conditioning). These are needed in areas of an unreliable power grid or excess noise from old power lines and transformers, or areas of heavy interference.
The archives are full of threads with recommendarions.
Or do you want a power regenerator which takes the incoming AC from the grid and your service panel and cleans the signal (reducing noise) then regenerates a new sine wave to power your components, (Active power conditioning). These are needed in areas of an unreliable power grid or excess noise from old power lines and transformers, or areas of heavy interference.
The archives are full of threads with recommendarions.