Lightning or a power surge won't care what you paid for it. A bigger question is how much would it cost you to lose the laptop from a power surge. You get what you pay for. Get one with a replacement warranty like apc.
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I would recommend the smallest wattage / joule rated one designed for a laptop - avoid dollar stores, and definitely stick with brand name, particularly with warranty.Personally for my laptop I never use a supressor, as modern power supply bricks are a lot more tolerant.