Originally Posted by D-Nice
No. Should I?
I've seen no proof that power conditioners no matter the price improve anything that wasn't fundamentally broken in the first place. For some reason the folks who claim you can only hear or see the differences can't even be bothered to put the equipment to a blind A/B/C test, let alone ask someone like an ISF calibrator who's qualified to measure and compare accuracy in a repeatable manner.
One reviewer who actually bothered to measure the AC spectrum with and without a power conditioner discovered just as much noise in the audible range, and slightly less high-frequency. He then went on to conclude how great that was since high-frequency noise can create lower harmonics ignoring the fact that high-frequency noise is easily induced after the fact, and easily reduced in audio applications with a low pass filter.
I bought a whole house surge arrestor years ago from a local lighting store. It was only like $50, and it just installed in the electric panel like a couple of circuit breakers. They just slapped in to each of the power bars, and then I had to connect up the ground. Unfortunately, I haven't seen it again since.
Whole house is definitely the way to go as you need a low impedance path to ground at the point of entry if you want to keep any sort of significant surge out of your house, and it's a lot cheaper than connecting series protectors and/or line isolators to every piece of equipment that can still be foiled if a surge is high enough voltage to arc.