I think Lay's Original (no BBQ or other flavoring) is a pretty close approximation of your "standard" potato chip.
If you want gourmet, try something that says "kettle cooked." Those tend to be thicker, and a bit more potatoey in flavor (Lay's tend to just taste like salt). I don't know want brands are available to you, but Cape Cod is pretty good. Again, I'd try the non-flavored version first.