Ease of Use - It is very user friendly with no complex messages popping up to scare the user. Although, if you place it in "training mode" you will get lots of pop ups for a few weeks as it learns what to allow and what to block of your activities. There are a lot of sub menu's and sub settings to navigate through, should you want to personalise your protection, which can be a bit confusing to Novice users.
Features - It covers all the bases here, main features are the Firewall and Anti Virus (these all cover web, mail, registry etc.) It also has spyware and malware protection meaning you no longer need multiple programs.
Performance - In high security mode it will block a lot of everyday activities eg. Sending and Receiving files over messengers, and many online games. However, set it to low security (default) and it will still protect you against any damaging threats. This product scores very highly on almost all independent tests on the internet and offers strong protection in all areas, with regular updates daily downloaded automatically in seconds.
System Usage - Much better than Norton (which really hogs the systems resources especially memory), It runs quietly in the background and you will forget it's there.