AbombKI found av40s high end not really good and low ends are totally a mess! but you should be aware that these two product are not in the same category. AV40s are around 180$ but HS8 are 300 each! so you need at least two (it will be around 600$) and I suggest to get an external interface and that would cost you a bit more. so before purchasing these please read a bit more about each product.
tldr; yes these are much better speaker than what you have.