Avast has provided stable virus protection for its entire 23 year history.
Many versions, including this year's, have earned several certifications recognizing its performance.
While all versions of Avast generally do well in testing, Avast's Internet Security provides better all-around protection for people who use their computers for online banking, shopping, and bill paying.
Then, when Premier finds your system has out-of-date software, it prompts you to upgrade it.
Since most infections today happen because of un-patched software, this feature gives you a real edge in security over the other two versions.
As with the firewall upgrade in the Internet Security Suite, this feature alone is a reason to upgrade.
Add to it the "File Shredding" feature, which securely deletes your files and removes any trace of them, and at almost the same price as the Internet Security Suite, it makes a compelling case for itself.