Rbwinterlink - Generally I would do ALOT of research, both online and talking w/dealers. Do not be quick to buy just because someone has stated possitives concerning a particular conditioner. As far as thunderstorms and lightning strikes, I don't know if any product has physically came through an actual test. I would not want to subject my equipment to a "test". I have personally purchased a Richard Gray Power House step down transformer and conditioner from a local dealer that I have known for a while, which may not be for everyone due to price. Prior to purchasing I researched alot on the net, and even inquired to having a custom one built. Even though it can power a home theater system (and probably much more),I am currently only using a 2 channel system, it does a fabulous job with enough overhead power and conditioning. The results in my opinion were well worth it. It did help already having a good relationship with the dealer, as I was able to get an incredible deal. As far as technical advise on other products, that I can not do. What can be said is that the Power House gave much more quietness (blackness) to the back groung with a sense of "unlimited power" by broadening the sound stage. It was not a fall back off your chair blown away effect, but enough of an upgrade to justify the purchase. Simply put, being the begining of the power source I am comfortable knowing I've got protection and power for my system.