The part of my house where I plan to implement my shack only has one 2 Socket - 2 Prong outlet. I know that has to be replaced but what I'm wondering is, should I replace it with a 2 Socket - 3 Prong Grounded Plug or with a 2 Socket - 3 Prong GFI? What would be the best type of electrical outlet for that part of my shack? I don't expect any moisture in that area so I don't know if a GFI would overkill.