Overall I was well impressed with avast! when I had it. But its PUPs detection was crazy. It went after all kinds of legitimate programs, including MozBackup and Panda Cloud Cleaner.
A slight alertness and pro activeness in terms of avoiding unknown and untrustworthy sources/ files and websites is the best security with a basic shield of AV and firewall. All the best
SuperAntiSpyware Pro and Peerblock can be removed as Avast IS and MBAM Pro already cover all the layers better than this two security products will ever do.