How do I protect my PC when a storm comes around?
Best way is to unplug it.
No surge protector no matter how expensive will protect your computer from an electrical storm.
If you absolutely insist on leaving it plugged in, get an expensive insured surge protector. The expensive ones will replace the computer if it fails to protect it. Make sure you save the receipt, box, and everything else that came with the surge protector when you bought it.