When it comes to features, Malwarebytes has been proven in battles against adware (ever heard of Genieo, VSearch or Vidx?), malware and trojans. I highly recommend this tool for users that want a simple, easy-to-use interface that gets things done on the spot.
I have some pretty encouraging memories with this tool, be it on Windows or Mac OS X, and I must confess that it has saved the day with ease, from various situations. I will start by highly recommending Malwarebytes for Mac.
