Not that you need one, but add one more vote for Malwarebytes. My "everyday" protection program is from Trend Micro, but it doesn't catch everything. Malwarebytes doesn't run in real time so it won't catch intrusions as they happen, but it does a better job than any other free program I have found (so far) of removing stuff when you do run it. My advice is to run it at night before you go to bed since it can take a long time to do a complete scan.
The only real issue I have with it running it along with another real-time program is that it will not automatically start up when I reboot. A little box pops up that tells me one of the startup programs can not be started so I have to click on the option to start it manually.