ASUS, (Hi-Grade) produced the only Laptop that survived the Ziff-Davis drop test a couple of years ago. I bought one with the spec you gave and have been well pleased with the kit but not so pleased with Tech Support. Warranty replacement of dead battery was good.
It's heavy!! They do bulk contract work and will badge them with your own brand name if you require. That'll help security.
They used to do laptops for PC World and may still do.
Don't forget Dell and Sony Vaio.