So why not use the Microsoft security programs?
If you're concerned about Avast being better which it probably is, then make periodic IMAGES of Windows using Acronis True Image (free if a local/usb Seagate or WD drive is detected.)
But as said, there are going to be issues with Windows 8. Personally I tried it for fun, hated the interface, jumped back to Windows 7 and never looked back.
Yeah,I am now relying on WINDOWS DEFENDER.
Pardon me-I am not aware of the Acronis True Image that you suggested in your last post.
thanks anyway for your post.