Your request should be limited to region, for Malaysia, my opinion is:

DELL >= Illegear > Lenovo > MSI > ASUS

MSI warranty service sounds little bit confused to me, you better check with authorized sellers or MSI sc. By the way, only DELL, Illegear and Lenovo offer warranty upgrade. These are the 5 brands I know only, others I am not sure.

Too bad for DELL is the Alienware is quite expensive, and other specs are not that attractive compared to other brands. But int terms of warranty, it is the best, my old DELL studio after 4 yrs still can be used.