I retired three years ago as head of a Raytheon Electromagnetics
Lab near Dallas. I would like to make a couple of points here:
1) Nothing protects well against a direct strike.
2) Anything is better than nothing.
3) You DO NOT get what you pay for. You pay for packaging,
nice colors, fancy brochures, websites , and advertising.
Most "surge protectors' are nearly the same inside.
See #2 above.
4) A good ground is better than no ground. But there are many
modes of failure where a ground has nothing to do with it....
So, my best advice:
Unplug everything and disconnect it physically from the telephone
line and power lines when there is any chance of a storm. All of the
surge protectors are based on the fact that people want to leave alll
their stuff plugged in, and they try to save them from themselves.....
Me -- ??? --- I do INTERNET on a laptop which is completely
removed from everything when I am not using it. Never had a problem,
tho I know that a near strike can still EMP the system --- very
So, just how much risk do you want to take....?
If you don't know exactly how surge protectors work and have the
academic background to full understand the subject, then you are
just repeating advertising hype,........... in my opinion.
Andy (retired PE, MS, BS, GMDSS, GROL etc etc )