So i just helped my dad pick out his new tv, its a 42 phillips plasma. Anyway he got it from best buy cuz he had a bunch of gift cards, my question is: the best buy guy told us we needed this $120 surge protector that filters the electricity that goes to the tv cuz without it, regular electricity is hard on the tv. is this legit? or would just a regular like $20 surge protector work just fine?? my dad hasn't hooked up the tv yet so i am tryin to figure this out so he can return it if it isn't worth having. thanks before hand for any info you can offer.