I've owned several manufacturer's solutions over the years for both active and passive power conditioning (Monster, Gray, Shunyata, ExactPower and Furman top of the line models in all cases; each has their virtues for video and/or audio and I've liked them all for various reasons).
A good dedicated circuit has been in place in my prior and current home since 2007; it's a must!
A while back I made the switch to a APS Purepower2000; it regenerates the wave twice then stores it in a large bank of batteries so your system sees battery power all the time. You can yank the power cable and be totally disconnected from the grid playing through batteries. I view this as a destination piece of gear to say the least.