Hi Mere.
These days you've gone through Qihoo , Panda and now you are going to install Comodo IS. I think you should have a little more time to test your antivirus quality. I recommend you go through the subforum called "Virus Exchange " where do daily tests of the main antivirus , both pay and free . On the other hand your browsers are triplets, it is the same with some adjustment, but it's basically the same . If you have several , try another browser like Chrome, Opera, SlimBrowser , Maxthon , Safari being very good , are not clones.
Kind regards