I clean-installed Windows 11 Pro 24H2 and am currently using Microsoft Defender and Firewall. I am deciding between using my preferred Comodo Firewall only or pairing Microsoft Defender with WHHLight Tools or CyberLock. Standalone Microsoft Defender and the pairings slow down the system a bit, while Comodo Firewall runs light. I like WHHLight Tools, but I might choose CyberLock for alerts over silent blocks. I am also considering standalone CyberLock with Always ON mode and some tweaks.