I got the itch to install a new Antivirus again. I've been doing good. I've been using Windows Defender for around 6 months now and recently added Zemana Antilogger. Six months is a record. However, I do believe either of these two offer greater protection and may run even lighter than WD on my 3 year old Asus notebook (8MB, Intel i5, 64 bit) with Windows 10 Anniversary Update installed. I ruled out AVG Free and Panda Free at this time. And I'm still uncertain about McAfee Free. Thanks.