Pros
- Excellent customer support
- Easy installation process with no special requirements required.
- Very good virus definitions compared at least twice better quality than most major competitors' free versions (such services run their own AV, have lower detection rates)
- Many layers included
- Antivirus + Antirootkit/anti keylogger+ Firewall etc..; even if there's some minor limitations regarding certain protection type capabilities.
- Lots variety within security toolset
Cons
- I will keep silent