i cannot say anything about quickheal since i've never heard of it before....
however i've been using kaspersky for many years now and its a solid product with good detection rates and good performance. its not the most lightweight AV around but its not as bad as some.
i have it installed on my i7 system, i7m laptop, another i7m laptop, an i3 laptop, a c2d system and an older amd x2 system and it runs fine.