Hello, to answer your first question in my opinion kaspersky is the best anti-virus I've used but when i help my customers on my website i recommend that they use AVG anti-virus free or pro because it seems to be an easy way to protect your computer and it offers a free version as well as a paid version which some people prefer. also to answer the question about is there a way to tone kaspersky down, I'm not sure about this but i think when you install kaspersky it says choose what level you are at and you can select beginner and it will make it an easy interface
hope this solved your problem, luke staszewski