Choosing a security toolkit with anti-virus, firewall and anti-malware programs is a matter of personal preference, your technical ability and experience, features offered, the amount of resources utilized, how it may affect system performance and what will work best for your system. A particular combination that works well for one person may not work as well for another.
There is no universal "one size fits all" solution that works for everyone. You may need to experiment and find what is most suitable for your needs. Another factor to consider is whether you want to use
paid for products or
free alternatives.
No single product is 100% foolproof and can prevent, detect and remove all threats at any given time. The security community is in a constant state of change as new infections appear. Each vendor has its own definition of what constitutes malware and scanning your computer using different criteria will yield different results. The fact that each program has its own definition files means that some malware may be picked up by one that could be missed by another. Thus, a
multi-layered defense using several anti-spyware products (including an effective firewall) to supplement your anti-virus combined with
common sense and safe surfing habits provides the most complete protection.
As a
general rule, using more than one anti-spyware program like Malwarebytes' Anti-Malware, SuperAntispyware, Spybot S&D, Ad-Aware, etc will not conflict with each other or your anti-virus if using only one of them for real time protection and others as stand-alone scanners. In fact, doing so
increases your protection coverage without causing the same kind of conflicts or affecting the stability of your system that can occur when using more than one anti-virus. The overlap of protection from using different signature databases will aid in detection and removal of more threats when scanning your system for malware.
However,
if using all their real-time resident shields (TeaTimer, Ad-Watch, MBAM Protection Module, Spyware Terminator Shields, etc) together at the same time,
there can be conflicts when each application tries to compete for resources and exclusive rights to perform an action. Additionally, competing tools may even provide redundant alerts which can be annoying and/or confusing.
I recommend
Malwarebytes Anti-Malware and taking advantage of the
Protection Module which uses
advanced heuristic scanning technology to monitor your system and provide real-time protection to
prevent the installation of most new malware. This technology monitors every process and
stops malicious processes before they can infect your computer. Enabling the Protection Module feature requires reqistration and purchase of a license key that includes free lifetime upgrades and support. After activation, Malwarebytes can be set to update itself and schedule scans automatically on a daily basis. The Protection Module is not intrusive as it utilizes few system resources and should not conflict with other scanners or anti-virus programs.
See Bleeping Computer's
Freeware Replacements For Common Commercial Apps and
List of Virus & Malware Resources.