Sergei,
All of the other members of this forum have answered your post quite honestly, factual, and without any hatred toward you or anyone else. You will have to go a long ways to find a better AV program (if at all), free or paid for. We have a better support forum with great members from the Devs right on down to members of my status. As mentioned before, there is no such thing as a perfect software program of any kind as long as its man-made, you should realize that. We wish you the best. If you want to join the forum you are welcome as the others have indicated.
Hope you have a nice life.