Do I need a surge protector or is the one (see picture above) sufficient?
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In my opinion there is no such thing as an effective surge protector. I see computers all the time that are plugged into uninterrupted power supplies or surge protectors and they still get fried when a storm hits. There's also a thing called brown power and Charlotte seems to have seen a lot of it lately. Brown power is when there is an increase or decrease in power coming into your home. That slight flux can also damage your computer or TV. So surge protector simply make us feel better about ourselves but ultimately, if lightning hits, if your computer is plugged into the wall in any way, that lightning will find its way to the device. Only safe thing to do is unplug your computer during storms.

All that being said, any surge protector is fine but if the big one hits, it won't matter.