Are you talking about gaming performance or what?
For low end gaming, a AMD based laptop will have decent graphics.
But for fast action games, you are looking at a more expensive discrete graphics chip.
From a quality point of view, the IBM thinkpad units were very good.
The current Lenovo thinkpad line is good.
Display quality from Apple might be the best.
Display quality will depend on the particular display, and it's size.
From a cpu processing capability, most laptops with sandy or ivy bridge duo's or better will be best.
Bar none, a SSD is the biggest performance improver for general use.
It is more complicated than just a simple brand poll.