I am looking for a new surge protector. I came across the Power Blocker 2 by newpiont for $39. And the back of the package it says joules are no longer a concern with this unit because it quickly senses and stops surges and protects bettter than the highest joule rated protectors and is 1000 faster. Is this BS or should i get one with a joule rating. I was looking at one at staples for $45 that has 2655 joules.