The first thing I did today was turning on my computer, and Comodo prompted me for an upgrade, directly to version 3.0. I originally had Avast installed, which often gave a lot of prompts. If you know how to set it up, it's a good firewall - small but powerful. Later, after seeing many netizens recommend Comodo, I decided to give it a try and installed Comodo Firewall Pro 2.4. After using it for a while, I thought it was pretty good, but it consumed a bit of memory.
The newly released version 3.0 seems to be more than just a simple upgrade from 2.4. Even the icon has changed, and the internet speed has also increased. Although it's currently only available in English, it's still quite easy to use.