MSE would be less of a drain on resources than Norton.
You could also consider Avast or Avira as the antivirus, but if you do be sure to add anti spyware such as Spyware Blaster and Malwarebytes or Spyware Terminator or Spybot S&D.
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?