So far, these two came up on my search list. Not sure why ESET has garnered more likes than BitDefender when yes, BitDefender is shy of CPU, memory usage - it is for free.
Also wanna ask, I see a lot of anti-virus apps sold on eBay at a much discounted price than its RRP. Are they legitimate?
This seller has good feedback. Eset is good internet security. https://www.ebay.com.au/itm/265305571084