I once updated to the latest version. Some bug or application lag forced me back to Avast 2015. And I never had to worry about anything. Its fast, hassle free and without any bugs. I only use File Shield and Web Shield (the two most important features for safe browsing) and aboslutely nothing else. Never caught a virus once. Thanks avast.
But, just out of curiosity, am I missing anything usefull since I didn't update to the latest version? Please note, I only care about File Shield and Web Shield (and few things like boot scan, removable media scan, and most useful of the feature; the statistics window for real time data)