Get a computer backup UPS. It will isolate your ground (good), regulate the incoming line voltage, and will let you listen to your system when everyone else in the neighborhood is lighting candles.
Add up the wattage of the equipment that you want to protect, and go to
APC UPS size calculator to determine what size you need.
You can find them in computer stores, or on the web for about 1/4 of the price of the audiophile stuff. Great protection, and it will give you time to shut your system down in the event of a power outage. Lightning might blow it up if you take a direct hit, but sacrificing itself in the name of the equipemnt it's protecting is it's job. In theory, much cheaper to replace.
One thing, make SURE of is that you do NOT get a "Standby Power Module". These do not regulate the line voltage all the time, they only kick in in the event of an outage. An "online" UPS will always regulate (and supplement, if necessary) the voltage going to the equipment. It will use battery voltage to make up for brownouts for as long as it can. Your gear will see a smooth 120 volts the entire time it is running.
