avast or firewall ?

[Quassar]

imo Comodo would be better definity better, however comodo have sux AV so you can use comod with off av and install something like SecureAPlus which come with few av scanner and this should be nice combo security.

if you wanna standalone af you can use Firewall windows control is layer on defeaul system windows with better gui and some addon features which improve system firewall.

But when you wanna stand alone FW wich use own engine than system you can check Fort knox