I think he's asking whether like Kaspersky anti-virus is better than Kaspersky internet security, for example. if that is the case, then the answer is no. Internet Security suites come with everything, firewall, anti-virus, anti-malware, anti-spyware, etc, as long as it is a good internet security suite. Personally, however, I use Avira AV personal with PC Tools firewall plus, Malwarebytes anti-malware, and CCleaner to keep all that crap from slowing down my computer.
@aford10: correct me if I'm wrong but KIS does indeed have many more features than Kaspersky Anti-virus.
Anyway, hope that helps and don't hesitate to ask any questions.