In 2014 AV-TEST tested 7 different cleaning tools (along with 10 antivirus solutions) Malwarebytes was the only tool that was capable of completely removing and restoring the system. It was concluded by AV-TEST to be the best tool for removing malware from infected computers.
Antivirus is a specific term referring to well-known and established malware, meaning that you'll still remain vulnerable to new and unique malware if you use an antivirus. Malwarebytes is constantly updated to find newer and rarer malware.
Optional installs include VPN, System Speedup, a password manager, browser extensions, and a hardened browser.
In the case that you've downloaded the Free Suite (not recomended), you can uninstall the above mentioned additional downloads with Avira's Connect app or any uninstaller utility software. This flexibility to cherry pick your extra software keeps the bloatware down somewhat.
Kaspersky is not the most lightweight application or as well optimized as applications such as Lookout. Some slowdowns may be experienced using Kaspersky but that may be a necessary sacrifice for Kaspersky's stronger virus detection rate.
McAfee was founded in 1987, and became famous for being the first antivirus software. John McAfee, the original creator, resigned from McAfee in 1994. The company was purchased by Intel in 2011 and renamed Intel Security. TPG Capital bought a majority share of the company in 2017. Long story short, all of this passing around has made the program much, much different than its former glory, yet it remains popular because of its origin.
McAfee has made multiple errors in recent years causing major, sometimes fatal problems in its users' computers. In 2006, McAfee settled out of a fraud lawsuit. In 2010, millions of computers entered a bootloop because of a failure in McAfee. In 2012, users of McAfee were unable to connect to the Internet.