Kaspersky has a pretty good reputation. So does Avast. (Very good, in fact.You hardly ever read anything bad about Avast.)
Personally, I think Avast is likely to be at least as good as Kaspersky. Maybe better in some respects. Who knows?
Try it out and decide for yourself.
It is very difficult to make objective assessments of how good the really good AV's are, compared to each other. Even the testing sites get quite differing results.
Now if one of them was really bad, it would be an easy question to answer.
[edit] Welcome to the the forum, by the way
Good place to find out how it works, get advice etc.