The program has been reviewed by http://www.av-comparatives.org/ on November 2009 (detection of unwanted programs and detection tests) and October 2009 (removal test) and has received Advanced+

I've tried their software months ago. Easy to use with good pricing. False positive can occur but you can configure the program to quarantine before removing anything. Trial edition is available that you might want to take advantage before buying.

BTW, it's low on using memory usage and updated often.