What Spark Plugs do i need??? Help

[PORTER22]

Had my S3 8p for a few weeks now and have just had bluefin put on but got slight hesation at 5k what spark plugs does anyone recommend??? Euro car parts like ngk PFR7S8EG or should I just get bosch

Thanks Mike

 

[Flexiblemouse]

NGK Iridium BKR8EIX