Symantec and McAfee have been crap for the last 8 years....
ESET makes a decent product that doesn’t bog down a system.
ESET believer here. Big time. Great product. Can usually find it on sale for $10.
I gave up on Symantec when they failed to update the original Norton engine (read CPU hog) to modern reality. That must have been back in the early 2000s.
If you’re using Windows 8 or higher, you’ve got Defender, which is Microsoft’s (very effective) anti-virus/malware platform. Windows 7 can use MS Security Essentials which is one of the best platforms MS developed before integrating it into the Windows 8 kernel.
Where I am, we’ve transitioned from Symantec which hardly caught anything ever to McAfee which is about as pathetic.
I like Avast myself. Viper was good at one time. AVG I’ll pass on. Ditto Kapersky.
ESET I never really experienced but hear good things.
I recommend Sophos.