There's no specific "best brand". All the manufacturers have awesome systems, and cheaper not so good systems. If you're trying to differentiate based on brand you're going to have a heck of time finding a laptop.
While looking for my notebook I looked at Asus, Dell, Lenovo, Microsoft, Acer, Gigabyte etc and made my decision based on the best deal for components/build quality.
The cheaper you go on a laptop, the worse the build quality will be or hardware.
That being said I'm a big fan of Lenovo and Asus as they offer many premium products at a lower cost than competitors such as Dell.