Hi Clint,
IMHO, the first thing you should do is have an electrician install a 20A dedicated line for your audio system. This should come before all three cable options. Second, buy a good receptacle for the electrician to install, like a Powerport. This should cost about $150 depending on where you live, including the receptacle.
After that you can worry about power conditioners and cables. No sense putting the cart before the horse. Power cords won't fix your issues with lighting, you need to isolate the circuit. Just my $0.02.
Cheers,
John