i'm usin ZoneAlarm since its existence n never had any complains. i tried COMODO after this topic arose, and found that COMODO have better and more options for protection (incl file / rootkit etc protection) but regarding ONLY firewall for INTERNET, i didn't find much difference than ZoneAlarm... as i use to install n check new softs, i started feeling little un-easy with comodo because of prompting me everytime (though its a good function), hence i'm back to ZoneAlarm-free....to protect myself, i use -> Nod32, Zonealarm, and Spybot - and with these 3 i think i'm pretty secure and not that hard on resources too...i request and invite comments on this and tips to improve...