A couple things to keep in mind with Surge protectors. Firstly, as someone mentioned earlier, nothing can protect you from a direct lightening strike. Having said that nearby strikes can cause voltage spikes, and if you have manufacturing facilities nearby can also cause spikes too. At present I don't use any whole house protection, but I do use various surge protection devices for my game room, security system, computers, AV room, and etc. Also when evaluating surge protectors, some will advertise a joule rating. That can be misleading at times because they might just put a bunch of MOVs in parallel for a higher advertised rating. Also, keep in mind that most basic surge protectors are sacrificial devices. In other words, they can only take so many hits before they fail. When one of these fails, it is possible that they might leak high voltage to the connected device. Having said that these kinds of surge protectors are quite affective. I live in central Indiana which has more lightening strikes in the country than almost anywhere else other than perhaps Florida. So, there is a real danger for my equipment unlike some other places around the US. I have only lost one piece of gear to a surge with a basic surge suppressor. I have been using Tripp Lite as someone else recommended, and I have had their LEDs go out after a surge (electrical storm) stating that they are no longer protecting the downstream device. So, you will need to replace them with some kind of regularity. Someone also mentioned Panamax, and they are a good product as well. I have used them in the past. Although, I have been moving to their sister brand Furman Sound. Whether it is them or another manufacturer probably doesn't make any difference as long as they make a good product, but what I like about these kinds of products is that they are not sacrificial. They can take repeated 6000V hits. Anything over 6000V starts to arc through the insulation. Also, I don't use any kind of voltage regulation at this time. My incoming voltage and frequency are pretty stable. There are companies that provide that capability, but at present I just use a non-sacrificial device for my more expensive equipment (game room, AV room, and computers) to provide surge protection (actually reduces voltage to a usable voltage) and disconnects the equipment when the incoming voltage is sagging or too hot. I would probably caution you on some of the technologies that some companies sell that utilize “balanced power.” In fact, I believe the National Electrical Code does not allow residential outlets to have balanced power. That would mean that the neutral was -60V and the hot +60V AC (RMS of course). Some equipment is not always compatible with this arrangement and can cause a safety issue because neutral is no longer tied to ground. There are a variety of “high end” power conditioners that use this. It is probably true that this method is good at delivering clean power, but I don't believe that takes care of the downsides of equipment compatibility and safety. You might also find that many amps, receivers, and subwoofers recommend not using a surge suppressor. This is because they can sometimes constrain electricity flow starving your high amp devices of the power when they need it. So, it would be recommended to go with a device that states that it supports high current output when using it for your amp, receiver, and/or subwoofer. Some devices even include capacitors to provide additional current for your high amp devices. Also, you might want to protect your incoming lines such as cable, TV antenna, and etc. Most of these technologies at this time seem to prevent the usage of non-sacrificial devices, so I use gas discharge tubes to redirect high voltages on various lines before they come into my house. I usually have to replace them every 7 years or so. Then I use surge suppressor connectors for the incoming line after it is in my house. Although, some surge suppressor line protections can cause problems. For instance, my cable modem was getting errors when running through the coax connectors on my Tripp Lite, so I connected it directly to the cable modem. Hope this helps,