I really haven't done any scientific study's on spark plugs so I won't act like I know which one is best for these cars. But the oem NGK's work and I haven't seen any problems with them. They rarely need to be changed so I don't see the point in cheaping out or gambling on something that might be junk.
Steve made a good point, it's a good idea to double check the gap. They don't usually come from the factory to the parts counter delivered on a pillow. People drop stuff.
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)