When I'd first joined, among the first rewards from MalwareTips came to me in the form of both staff & members explaining to me how our XP system, prior to it's recent forced retirement, lacked the needed protection it's aging firewall had been designed to provide. Thankfully, this was not the case for either of our 2 newer computers each with
Windows 7 & 8, for they are armed with '
more than enough protection' which still rings true to this day!
Each of the Firewalls listed above (including Comodo, considered a choice for advanced users for it's "Tweek-ability") I had considered for our needful XP. I chose
PrivateFirewall (free), originally my second choice after Online Armor which was not free at that time. I am very satisfied with Windows Firewalls, at present, on both 7 & 8, and shall remain so until I find myself (perhaps years from now) pondering once more what would best replace my
older Windows Firewall as the latest mainstream Systems, Windows 9 or 10 in the future, will be taking the places of our newer systems of today.
Update: I just came from a thread
http://malwaretips.com/threads/help-with-comodo-firewall-uninstall.25910/ and now highly advise against choosing Comodo Firewall unless, having studied very closely the available user reviews & member experiences here, you can proceed knowing what can be expected. Thanks, & good luck!