Best at Virus cleaning
I use Dr. Web on a lot of my PC malware removal jobs, and it can clean just about any threat you throw at it, and its never failed me. It has got me out of a lot of tough situations and detects about 82% of the malware out there (very good). Although its memory usage is a problem. Its pretty heavy on computer resources.
Calrap about
Dr.Web Light, v6.0.6