Well i am a total fail for loving to use power conditioners.
I started years ago with a little Adcom ACE515 and never looked back. Got a Monster 5000, then a Monstr HTPS7000SS and a AVS2000. Then about 30 months ago went big time to a Furman REF20i (i got the $3,500 list object for $1,400 via Agon, and close enough to pick up too.
Then wanted a alternate AC range, so same way bought a PS Audio P-600 with optional board allows it to vary output AC sinewave from low of 60cycles up to 120 cycles. (i currently use it at 110hz A/C output for my digital stuff)
Also Agon $1,000 also local pickup.
Only the FurmanREF20i and the PS Audio are in my setup now. The Furman has EVERYTHING on it, including the amp. Just went to a Pangea AC9SE on the Furman, and to amp.
Tried another AC9SE elsewhere, but a little too much of a good thing.
I would NEVER go without a power conditioner.
The pluses are cleaner sound, greater transparency. The downsides are possible leaness if too much stuff used.
I push them to just before they start sounding lean or thin. I dislike fat chubby thick sound. Some call it warm. I call it mush.
I like the 'Japanese sound' Lean, tight, lots of clarity and dynamics Massed voices I can hear every individual voice.. That is what i want. Clean. slightly sweet.. Great.
My conditioners give it to me.
I have ALL pangea cords on IEC stuff.
So I am a big cord and conditioner lover.
Still, my total expenditurs on ALL non-component stuff is only about 15% total of equipment actual cost. 10% cables cords. 5% power conditioning in use. (taking half off conditioner cost as video shares the conditioners too)