Which laptop brand shall I choose?

I'm looking for a all rounder laptop which can run high end games, has a sharper and nice screen a better processor 8gb or up ram and a better graphics card. So I looked for lenovo ideapad y50-70 which is an awesome laptop, lenovo idea pad z50-70 dell inspiron 177 7737 and a few hp laptops. But every one has some draw backs like dell has no microphone and not much graphics card, etc., so which one I should choose as a good laptop. And I don't want processor below intel core i7 and AMD graphics card. Can any body help me?