If you are really worried about electricity problems, I would but a battery backup. They have built in surger protectors and they protect from brown outs. Damage can occur from both. That is why we have all our computers and TV on battery back ups. They are only around $100 and Best Buy usually has them on sale every now and then. If you are going to use a surge protect, don't but from dollar store, spend a few extra buck for a good one for the high price items and the dollar store brand for cheaper stuff.
Just my 2 cents.