Really depends on if you know your stuff or not, I find that the protection is good if you don't mind the inconvenience of the occasional issue of some programmes breaking cause of the incompatibility of the sandboxing system.
What they do is sandbox everything that they do not know for sure that is malware, based on HIPS and the behavior of the software in question. This can be very effective when blocking malware on the system, however it can also hinder your software by blocking or restricting certain harmless applications that would result in your laptop having errors and stuff.
Personally I have used Comodo Firewall which has the same sandboxing and HIPS features the Internet security has and I found that it was useless to me because it kept disrupting my workflow by sandboxing harmless applications that I knew were safe to use. Finally I just disabled the auto sandboxing while leaving the HIPS active, that worked for me. Now the question is how will Comodo work for you? What are your surfing habits? You can't really ask if it's a good antivirus because the AV can only go so far in protecting you from malware. The best way to find out is to download it yourself and see if it works for you. If it does, great you can stick with it. But if you're like me then maybe it's not for you, and you should move on to something that only isolates confirmed threats and not every single file you download from the internet (yes it is a feature that Comodo will sandbox anything that you download from the internet)
