Use the OEM plug. The fuel economy will not go down.
I tried the Bosch plus 4 plugs in my Pacifica, fuel economy went down by 4 mpg, replaced them with the OEM plugs, fuel economy returned.
I learned a lesson, the engineers at the factory do know what they are doing. I had to pull the intake manifold also. ( twice...Ugg)
I have not had to replace my plugs on my edge (only 3000 miles) but when the time comes, I will use the OEM plugs.